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Finding the Fourth Proportional to 113,520.08, 156,657.74 and 65,801.12

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Solution

The fourth proportional to 113,520.08, 156,657.74 and 65,801.12 is: 90,805.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,520.08 : 156,657.74 = 65,801.12 : x
  2. Step 2: Convert to fraction form
    113,520.08/156,657.74 = 65,801.12/x
  3. Step 3: Cross multiply
    113,520.08x = 156,657.74 × 65,801.12
  4. Step 4: Simplify right side
    113,520.08x = 10,308,254,419.66
  5. Step 5: Solve for x
    x = 10,308,254,419.66/113,520.08
  6. Step 6: Final answer
    x = 90,805.56

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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.