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Finding the Fourth Proportional to 74,870.60, 112,253.88 and 28,110.92

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Solution

The fourth proportional to 74,870.60, 112,253.88 and 28,110.92 is: 42,146.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,870.60 : 112,253.88 = 28,110.92 : x
  2. Step 2: Convert to fraction form
    74,870.60/112,253.88 = 28,110.92/x
  3. Step 3: Cross multiply
    74,870.60x = 112,253.88 × 28,110.92
  4. Step 4: Simplify right side
    74,870.60x = 3,155,559,840.37
  5. Step 5: Solve for x
    x = 3,155,559,840.37/74,870.60
  6. Step 6: Final answer
    x = 42,146.85

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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.