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Finding the Fourth Proportional to 111,710.46, 154,196.40 and 71,532.48

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Solution

The fourth proportional to 111,710.46, 154,196.40 and 71,532.48 is: 98,737.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,710.46 : 154,196.40 = 71,532.48 : x
  2. Step 2: Convert to fraction form
    111,710.46/154,196.40 = 71,532.48/x
  3. Step 3: Cross multiply
    111,710.46x = 154,196.40 × 71,532.48
  4. Step 4: Simplify right side
    111,710.46x = 11,030,050,899.07
  5. Step 5: Solve for x
    x = 11,030,050,899.07/111,710.46
  6. Step 6: Final answer
    x = 98,737.85

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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.