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Finding the Fourth Proportional to 111,372.57, 153,701.15 and 61,071.57

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Solution

The fourth proportional to 111,372.57, 153,701.15 and 61,071.57 is: 84,282.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,372.57 : 153,701.15 = 61,071.57 : x
  2. Step 2: Convert to fraction form
    111,372.57/153,701.15 = 61,071.57/x
  3. Step 3: Cross multiply
    111,372.57x = 153,701.15 × 61,071.57
  4. Step 4: Simplify right side
    111,372.57x = 9,386,770,235.95
  5. Step 5: Solve for x
    x = 9,386,770,235.95/111,372.57
  6. Step 6: Final answer
    x = 84,282.60

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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.