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Finding the Fourth Proportional to 118,493.10, 163,412.10 and 92,655

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Solution

The fourth proportional to 118,493.10, 163,412.10 and 92,655 is: 127,779.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,493.10 : 163,412.10 = 92,655 : x
  2. Step 2: Convert to fraction form
    118,493.10/163,412.10 = 92,655/x
  3. Step 3: Cross multiply
    118,493.10x = 163,412.10 × 92,655
  4. Step 4: Simplify right side
    118,493.10x = 15,140,948,125.50
  5. Step 5: Solve for x
    x = 15,140,948,125.50/118,493.10
  6. Step 6: Final answer
    x = 127,779.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.