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Finding the Fourth Proportional to 113,287.80, 156,349.11 and 64,893.59

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Solution

The fourth proportional to 113,287.80, 156,349.11 and 64,893.59 is: 89,560.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,287.80 : 156,349.11 = 64,893.59 : x
  2. Step 2: Convert to fraction form
    113,287.80/156,349.11 = 64,893.59/x
  3. Step 3: Cross multiply
    113,287.80x = 156,349.11 × 64,893.59
  4. Step 4: Simplify right side
    113,287.80x = 10,146,055,041.20
  5. Step 5: Solve for x
    x = 10,146,055,041.20/113,287.80
  6. Step 6: Final answer
    x = 89,560.00

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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.