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Finding the Fourth Proportional to 472,342.80, 708,060.60 and 156,637.20

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Solution

The fourth proportional to 472,342.80, 708,060.60 and 156,637.20 is: 234,805.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,342.80 : 708,060.60 = 156,637.20 : x
  2. Step 2: Convert to fraction form
    472,342.80/708,060.60 = 156,637.20/x
  3. Step 3: Cross multiply
    472,342.80x = 708,060.60 × 156,637.20
  4. Step 4: Simplify right side
    472,342.80x = 110,908,629,814.32
  5. Step 5: Solve for x
    x = 110,908,629,814.32/472,342.80
  6. Step 6: Final answer
    x = 234,805.38

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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.