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Finding the Fourth Proportional to 86,281.98, 129,248.01 and 44,641.50

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Solution

The fourth proportional to 86,281.98, 129,248.01 and 44,641.50 is: 66,871.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,281.98 : 129,248.01 = 44,641.50 : x
  2. Step 2: Convert to fraction form
    86,281.98/129,248.01 = 44,641.50/x
  3. Step 3: Cross multiply
    86,281.98x = 129,248.01 × 44,641.50
  4. Step 4: Simplify right side
    86,281.98x = 5,769,825,038.42
  5. Step 5: Solve for x
    x = 5,769,825,038.42/86,281.98
  6. Step 6: Final answer
    x = 66,871.73

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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.