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Finding the Fourth Proportional to 74,686.64, 112,047.24 and 43,548.08

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Solution

The fourth proportional to 74,686.64, 112,047.24 and 43,548.08 is: 65,332.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,686.64 : 112,047.24 = 43,548.08 : x
  2. Step 2: Convert to fraction form
    74,686.64/112,047.24 = 43,548.08/x
  3. Step 3: Cross multiply
    74,686.64x = 112,047.24 × 43,548.08
  4. Step 4: Simplify right side
    74,686.64x = 4,879,442,171.30
  5. Step 5: Solve for x
    x = 4,879,442,171.30/74,686.64
  6. Step 6: Final answer
    x = 65,332.20

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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.