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Finding the Fourth Proportional to 108,900.52, 163,360.87 and 42,345.65

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Solution

The fourth proportional to 108,900.52, 163,360.87 and 42,345.65 is: 63,522.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,900.52 : 163,360.87 = 42,345.65 : x
  2. Step 2: Convert to fraction form
    108,900.52/163,360.87 = 42,345.65/x
  3. Step 3: Cross multiply
    108,900.52x = 163,360.87 × 42,345.65
  4. Step 4: Simplify right side
    108,900.52x = 6,917,622,527.25
  5. Step 5: Solve for x
    x = 6,917,622,527.25/108,900.52
  6. Step 6: Final answer
    x = 63,522.40

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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.