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Finding the Fourth Proportional to 113,111.20, 169,666.80 and 113,111.20

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Solution

The fourth proportional to 113,111.20, 169,666.80 and 113,111.20 is: 169,666.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,111.20 : 169,666.80 = 113,111.20 : x
  2. Step 2: Convert to fraction form
    113,111.20/169,666.80 = 113,111.20/x
  3. Step 3: Cross multiply
    113,111.20x = 169,666.80 × 113,111.20
  4. Step 4: Simplify right side
    113,111.20x = 19,191,215,348.16
  5. Step 5: Solve for x
    x = 19,191,215,348.16/113,111.20
  6. Step 6: Final answer
    x = 169,666.80

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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.