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Finding the Fourth Proportional to 113,888.59, 170,735.68 and 80,503.63

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Solution

The fourth proportional to 113,888.59, 170,735.68 and 80,503.63 is: 120,686.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,888.59 : 170,735.68 = 80,503.63 : x
  2. Step 2: Convert to fraction form
    113,888.59/170,735.68 = 80,503.63/x
  3. Step 3: Cross multiply
    113,888.59x = 170,735.68 × 80,503.63
  4. Step 4: Simplify right side
    113,888.59x = 13,744,841,684.31
  5. Step 5: Solve for x
    x = 13,744,841,684.31/113,888.59
  6. Step 6: Final answer
    x = 120,686.73

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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.