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Finding the Fourth Proportional to 522,116.80, 720,515.39 and 292,711.43

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Solution

The fourth proportional to 522,116.80, 720,515.39 and 292,711.43 is: 403,938.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,116.80 : 720,515.39 = 292,711.43 : x
  2. Step 2: Convert to fraction form
    522,116.80/720,515.39 = 292,711.43/x
  3. Step 3: Cross multiply
    522,116.80x = 720,515.39 × 292,711.43
  4. Step 4: Simplify right side
    522,116.80x = 210,903,090,481.64
  5. Step 5: Solve for x
    x = 210,903,090,481.64/522,116.80
  6. Step 6: Final answer
    x = 403,938.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.