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Finding the Fourth Proportional to 316,778.70, 437,153.31 and 173,547.66

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Solution

The fourth proportional to 316,778.70, 437,153.31 and 173,547.66 is: 239,495.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,778.70 : 437,153.31 = 173,547.66 : x
  2. Step 2: Convert to fraction form
    316,778.70/437,153.31 = 173,547.66/x
  3. Step 3: Cross multiply
    316,778.70x = 437,153.31 × 173,547.66
  4. Step 4: Simplify right side
    316,778.70x = 75,866,934,011.75
  5. Step 5: Solve for x
    x = 75,866,934,011.75/316,778.70
  6. Step 6: Final answer
    x = 239,495.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.