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Finding the Fourth Proportional to 316,770.01, 437,139.13 and 171,572.18

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Solution

The fourth proportional to 316,770.01, 437,139.13 and 171,572.18 is: 236,767.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,770.01 : 437,139.13 = 171,572.18 : x
  2. Step 2: Convert to fraction form
    316,770.01/437,139.13 = 171,572.18/x
  3. Step 3: Cross multiply
    316,770.01x = 437,139.13 × 171,572.18
  4. Step 4: Simplify right side
    316,770.01x = 75,000,912,024.11
  5. Step 5: Solve for x
    x = 75,000,912,024.11/316,770.01
  6. Step 6: Final answer
    x = 236,767.72

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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.