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Finding the Fourth Proportional to 111,116.76, 153,344.80 and 60,815.76

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Solution

The fourth proportional to 111,116.76, 153,344.80 and 60,815.76 is: 83,927.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,116.76 : 153,344.80 = 60,815.76 : x
  2. Step 2: Convert to fraction form
    111,116.76/153,344.80 = 60,815.76/x
  3. Step 3: Cross multiply
    111,116.76x = 153,344.80 × 60,815.76
  4. Step 4: Simplify right side
    111,116.76x = 9,325,780,554.05
  5. Step 5: Solve for x
    x = 9,325,780,554.05/111,116.76
  6. Step 6: Final answer
    x = 83,927.76

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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.