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Finding the Fourth Proportional to 111,508.04, 153,870.84 and 66,178.22

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Solution

The fourth proportional to 111,508.04, 153,870.84 and 66,178.22 is: 91,319.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,508.04 : 153,870.84 = 66,178.22 : x
  2. Step 2: Convert to fraction form
    111,508.04/153,870.84 = 66,178.22/x
  3. Step 3: Cross multiply
    111,508.04x = 153,870.84 × 66,178.22
  4. Step 4: Simplify right side
    111,508.04x = 10,182,897,531.75
  5. Step 5: Solve for x
    x = 10,182,897,531.75/111,508.04
  6. Step 6: Final answer
    x = 91,319.85

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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.