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Finding the Fourth Proportional to 100,937.60, 151,406.40 and 61,474.40

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Solution

The fourth proportional to 100,937.60, 151,406.40 and 61,474.40 is: 92,211.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,937.60 : 151,406.40 = 61,474.40 : x
  2. Step 2: Convert to fraction form
    100,937.60/151,406.40 = 61,474.40/x
  3. Step 3: Cross multiply
    100,937.60x = 151,406.40 × 61,474.40
  4. Step 4: Simplify right side
    100,937.60x = 9,307,617,596.16
  5. Step 5: Solve for x
    x = 9,307,617,596.16/100,937.60
  6. Step 6: Final answer
    x = 92,211.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.