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Finding the Fourth Proportional to 111,158.73, 153,487.50 and 102,657.75

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Solution

The fourth proportional to 111,158.73, 153,487.50 and 102,657.75 is: 141,749.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,158.73 : 153,487.50 = 102,657.75 : x
  2. Step 2: Convert to fraction form
    111,158.73/153,487.50 = 102,657.75/x
  3. Step 3: Cross multiply
    111,158.73x = 153,487.50 × 102,657.75
  4. Step 4: Simplify right side
    111,158.73x = 15,756,681,403.13
  5. Step 5: Solve for x
    x = 15,756,681,403.13/111,158.73
  6. Step 6: Final answer
    x = 141,749.38

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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.