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Finding the Fourth Proportional to 111,443.13, 153,790.92 and 60,456.87

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Solution

The fourth proportional to 111,443.13, 153,790.92 and 60,456.87 is: 83,430.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,443.13 : 153,790.92 = 60,456.87 : x
  2. Step 2: Convert to fraction form
    111,443.13/153,790.92 = 60,456.87/x
  3. Step 3: Cross multiply
    111,443.13x = 153,790.92 × 60,456.87
  4. Step 4: Simplify right side
    111,443.13x = 9,297,717,657.62
  5. Step 5: Solve for x
    x = 9,297,717,657.62/111,443.13
  6. Step 6: Final answer
    x = 83,430.16

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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.