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Finding the Fourth Proportional to 113,493.45, 156,573.95 and 67,543.90

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Solution

The fourth proportional to 113,493.45, 156,573.95 and 67,543.90 is: 93,182.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,493.45 : 156,573.95 = 67,543.90 : x
  2. Step 2: Convert to fraction form
    113,493.45/156,573.95 = 67,543.90/x
  3. Step 3: Cross multiply
    113,493.45x = 156,573.95 × 67,543.90
  4. Step 4: Simplify right side
    113,493.45x = 10,575,615,221.41
  5. Step 5: Solve for x
    x = 10,575,615,221.41/113,493.45
  6. Step 6: Final answer
    x = 93,182.60

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1.5x scale

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.