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Finding the Fourth Proportional to 86,898.75, 119,920.28 and 47,154.75

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Solution

The fourth proportional to 86,898.75, 119,920.28 and 47,154.75 is: 65,073.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,898.75 : 119,920.28 = 47,154.75 : x
  2. Step 2: Convert to fraction form
    86,898.75/119,920.28 = 47,154.75/x
  3. Step 3: Cross multiply
    86,898.75x = 119,920.28 × 47,154.75
  4. Step 4: Simplify right side
    86,898.75x = 5,654,810,587.56
  5. Step 5: Solve for x
    x = 5,654,810,587.56/86,898.75
  6. Step 6: Final answer
    x = 65,073.56

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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.