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Finding the Fourth Proportional to 316,348.28, 474,508.58 and 91,703.82

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Solution

The fourth proportional to 316,348.28, 474,508.58 and 91,703.82 is: 137,551.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,348.28 : 474,508.58 = 91,703.82 : x
  2. Step 2: Convert to fraction form
    316,348.28/474,508.58 = 91,703.82/x
  3. Step 3: Cross multiply
    316,348.28x = 474,508.58 × 91,703.82
  4. Step 4: Simplify right side
    316,348.28x = 43,514,248,950.26
  5. Step 5: Solve for x
    x = 43,514,248,950.26/316,348.28
  6. Step 6: Final answer
    x = 137,551.72

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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.