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Finding the Fourth Proportional to 59,385.60, 89,078.40 and 19,938.60

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Solution

The fourth proportional to 59,385.60, 89,078.40 and 19,938.60 is: 29,907.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,385.60 : 89,078.40 = 19,938.60 : x
  2. Step 2: Convert to fraction form
    59,385.60/89,078.40 = 19,938.60/x
  3. Step 3: Cross multiply
    59,385.60x = 89,078.40 × 19,938.60
  4. Step 4: Simplify right side
    59,385.60x = 1,776,098,586.24
  5. Step 5: Solve for x
    x = 1,776,098,586.24/59,385.60
  6. Step 6: Final answer
    x = 29,907.90

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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.