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Finding the Fourth Proportional to 647,496,673.40, 971,245,010.10 and 579,472,225.40

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Solution

The fourth proportional to 647,496,673.40, 971,245,010.10 and 579,472,225.40 is: 869,208,338.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,496,673.40 : 971,245,010.10 = 579,472,225.40 : x
  2. Step 2: Convert to fraction form
    647,496,673.40/971,245,010.10 = 579,472,225.40/x
  3. Step 3: Cross multiply
    647,496,673.40x = 971,245,010.10 × 579,472,225.40
  4. Step 4: Simplify right side
    647,496,673.40x = 562,809,507,411,292,480
  5. Step 5: Solve for x
    x = 562,809,507,411,292,480/647,496,673.40
  6. Step 6: Final answer
    x = 869,208,338.10

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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.