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Finding the Fourth Proportional to 74,018.80, 110,973.48 and 38,429.02

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Solution

The fourth proportional to 74,018.80, 110,973.48 and 38,429.02 is: 57,615.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,018.80 : 110,973.48 = 38,429.02 : x
  2. Step 2: Convert to fraction form
    74,018.80/110,973.48 = 38,429.02/x
  3. Step 3: Cross multiply
    74,018.80x = 110,973.48 × 38,429.02
  4. Step 4: Simplify right side
    74,018.80x = 4,264,602,082.39
  5. Step 5: Solve for x
    x = 4,264,602,082.39/74,018.80
  6. Step 6: Final answer
    x = 57,615.12

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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.