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Finding the Fourth Proportional to 74,952.80, 112,373.84 and 45,364.14

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Solution

The fourth proportional to 74,952.80, 112,373.84 and 45,364.14 is: 68,012.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,952.80 : 112,373.84 = 45,364.14 : x
  2. Step 2: Convert to fraction form
    74,952.80/112,373.84 = 45,364.14/x
  3. Step 3: Cross multiply
    74,952.80x = 112,373.84 × 45,364.14
  4. Step 4: Simplify right side
    74,952.80x = 5,097,742,610.10
  5. Step 5: Solve for x
    x = 5,097,742,610.10/74,952.80
  6. Step 6: Final answer
    x = 68,012.70

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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.