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Finding the Fourth Proportional to 316,315.15, 474,472.73 and 129,282.91

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Solution

The fourth proportional to 316,315.15, 474,472.73 and 129,282.91 is: 193,924.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,315.15 : 474,472.73 = 129,282.91 : x
  2. Step 2: Convert to fraction form
    316,315.15/474,472.73 = 129,282.91/x
  3. Step 3: Cross multiply
    316,315.15x = 474,472.73 × 129,282.91
  4. Step 4: Simplify right side
    316,315.15x = 61,341,215,250.04
  5. Step 5: Solve for x
    x = 61,341,215,250.04/316,315.15
  6. Step 6: Final answer
    x = 193,924.37

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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.