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Finding the Fourth Proportional to 472,359.40, 708,356.04 and 156,731.56

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Solution

The fourth proportional to 472,359.40, 708,356.04 and 156,731.56 is: 235,036.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,359.40 : 708,356.04 = 156,731.56 : x
  2. Step 2: Convert to fraction form
    472,359.40/708,356.04 = 156,731.56/x
  3. Step 3: Cross multiply
    472,359.40x = 708,356.04 × 156,731.56
  4. Step 4: Simplify right side
    472,359.40x = 111,021,747,184.62
  5. Step 5: Solve for x
    x = 111,021,747,184.62/472,359.40
  6. Step 6: Final answer
    x = 235,036.60

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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.