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Finding the Fourth Proportional to 113,438.88, 169,899.12 and 54,316.08

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Solution

The fourth proportional to 113,438.88, 169,899.12 and 54,316.08 is: 81,350.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,438.88 : 169,899.12 = 54,316.08 : x
  2. Step 2: Convert to fraction form
    113,438.88/169,899.12 = 54,316.08/x
  3. Step 3: Cross multiply
    113,438.88x = 169,899.12 × 54,316.08
  4. Step 4: Simplify right side
    113,438.88x = 9,228,254,193.85
  5. Step 5: Solve for x
    x = 9,228,254,193.85/113,438.88
  6. Step 6: Final answer
    x = 81,350.01

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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.