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Finding the Fourth Proportional to 472,103.93, 708,451.14 and 191,621.18

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Solution

The fourth proportional to 472,103.93, 708,451.14 and 191,621.18 is: 287,551.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,103.93 : 708,451.14 = 191,621.18 : x
  2. Step 2: Convert to fraction form
    472,103.93/708,451.14 = 191,621.18/x
  3. Step 3: Cross multiply
    472,103.93x = 708,451.14 × 191,621.18
  4. Step 4: Simplify right side
    472,103.93x = 135,754,239,876.89
  5. Step 5: Solve for x
    x = 135,754,239,876.89/472,103.93
  6. Step 6: Final answer
    x = 287,551.60

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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.