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Finding the Fourth Proportional to 651,711.60, 913,640.40 and 651,711.60

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Solution

The fourth proportional to 651,711.60, 913,640.40 and 651,711.60 is: 913,640.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,711.60 : 913,640.40 = 651,711.60 : x
  2. Step 2: Convert to fraction form
    651,711.60/913,640.40 = 651,711.60/x
  3. Step 3: Cross multiply
    651,711.60x = 913,640.40 × 651,711.60
  4. Step 4: Simplify right side
    651,711.60x = 595,430,046,908.64
  5. Step 5: Solve for x
    x = 595,430,046,908.64/651,711.60
  6. Step 6: Final answer
    x = 913,640.40

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.