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Finding the Fourth Proportional to 307,666.20, 461,572.20 and 157,929.60

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Solution

The fourth proportional to 307,666.20, 461,572.20 and 157,929.60 is: 236,931.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,666.20 : 461,572.20 = 157,929.60 : x
  2. Step 2: Convert to fraction form
    307,666.20/461,572.20 = 157,929.60/x
  3. Step 3: Cross multiply
    307,666.20x = 461,572.20 × 157,929.60
  4. Step 4: Simplify right side
    307,666.20x = 72,895,912,917.12
  5. Step 5: Solve for x
    x = 72,895,912,917.12/307,666.20
  6. Step 6: Final answer
    x = 236,931.82

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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.