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Finding the Fourth Proportional to 316,691.18, 437,040.91 and 180,722.42

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Solution

The fourth proportional to 316,691.18, 437,040.91 and 180,722.42 is: 249,400.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,691.18 : 437,040.91 = 180,722.42 : x
  2. Step 2: Convert to fraction form
    316,691.18/437,040.91 = 180,722.42/x
  3. Step 3: Cross multiply
    316,691.18x = 437,040.91 × 180,722.42
  4. Step 4: Simplify right side
    316,691.18x = 78,983,090,894.20
  5. Step 5: Solve for x
    x = 78,983,090,894.20/316,691.18
  6. Step 6: Final answer
    x = 249,400.98

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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.