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Finding the Fourth Proportional to 111,157.39, 153,397.20 and 60,856.39

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Solution

The fourth proportional to 111,157.39, 153,397.20 and 60,856.39 is: 83,981.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,157.39 : 153,397.20 = 60,856.39 : x
  2. Step 2: Convert to fraction form
    111,157.39/153,397.20 = 60,856.39/x
  3. Step 3: Cross multiply
    111,157.39x = 153,397.20 × 60,856.39
  4. Step 4: Simplify right side
    111,157.39x = 9,335,199,828.11
  5. Step 5: Solve for x
    x = 9,335,199,828.11/111,157.39
  6. Step 6: Final answer
    x = 83,981.82

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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.