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Finding the Fourth Proportional to 74,970.76, 112,419.42 and 25,033.72

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Solution

The fourth proportional to 74,970.76, 112,419.42 and 25,033.72 is: 37,538.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,970.76 : 112,419.42 = 25,033.72 : x
  2. Step 2: Convert to fraction form
    74,970.76/112,419.42 = 25,033.72/x
  3. Step 3: Cross multiply
    74,970.76x = 112,419.42 × 25,033.72
  4. Step 4: Simplify right side
    74,970.76x = 2,814,276,282.84
  5. Step 5: Solve for x
    x = 2,814,276,282.84/74,970.76
  6. Step 6: Final answer
    x = 37,538.32

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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.