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Finding the Fourth Proportional to 661,627,220.40, 992,440,830.60 and 661,627,220.40

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Solution

The fourth proportional to 661,627,220.40, 992,440,830.60 and 661,627,220.40 is: 992,440,830.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,627,220.40 : 992,440,830.60 = 661,627,220.40 : x
  2. Step 2: Convert to fraction form
    661,627,220.40/992,440,830.60 = 661,627,220.40/x
  3. Step 3: Cross multiply
    661,627,220.40x = 992,440,830.60 × 661,627,220.40
  4. Step 4: Simplify right side
    661,627,220.40x = 656,625,868,161,345,280
  5. Step 5: Solve for x
    x = 656,625,868,161,345,280/661,627,220.40
  6. Step 6: Final answer
    x = 992,440,830.60

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.