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Finding the Fourth Proportional to 108,699.90, 162,909.48 and 48,684.52

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Solution

The fourth proportional to 108,699.90, 162,909.48 and 48,684.52 is: 72,963.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,699.90 : 162,909.48 = 48,684.52 : x
  2. Step 2: Convert to fraction form
    108,699.90/162,909.48 = 48,684.52/x
  3. Step 3: Cross multiply
    108,699.90x = 162,909.48 × 48,684.52
  4. Step 4: Simplify right side
    108,699.90x = 7,931,169,837.25
  5. Step 5: Solve for x
    x = 7,931,169,837.25/108,699.90
  6. Step 6: Final answer
    x = 72,963.91

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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.