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Finding the Fourth Proportional to 577,812.60, 866,587.68 and 278,140.20

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Solution

The fourth proportional to 577,812.60, 866,587.68 and 278,140.20 is: 417,147.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,812.60 : 866,587.68 = 278,140.20 : x
  2. Step 2: Convert to fraction form
    577,812.60/866,587.68 = 278,140.20/x
  3. Step 3: Cross multiply
    577,812.60x = 866,587.68 × 278,140.20
  4. Step 4: Simplify right side
    577,812.60x = 241,032,870,632.74
  5. Step 5: Solve for x
    x = 241,032,870,632.74/577,812.60
  6. Step 6: Final answer
    x = 417,147.13

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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.