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Finding the Fourth Proportional to 59,881.60, 89,779.20 and 39,116.80

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Solution

The fourth proportional to 59,881.60, 89,779.20 and 39,116.80 is: 58,646.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,881.60 : 89,779.20 = 39,116.80 : x
  2. Step 2: Convert to fraction form
    59,881.60/89,779.20 = 39,116.80/x
  3. Step 3: Cross multiply
    59,881.60x = 89,779.20 × 39,116.80
  4. Step 4: Simplify right side
    59,881.60x = 3,511,875,010.56
  5. Step 5: Solve for x
    x = 3,511,875,010.56/59,881.60
  6. Step 6: Final answer
    x = 58,646.98

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1.5x scale

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.