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Finding the Fourth Proportional to 113,463.88, 156,570.56 and 66,889.32

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Solution

The fourth proportional to 113,463.88, 156,570.56 and 66,889.32 is: 92,301.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,463.88 : 156,570.56 = 66,889.32 : x
  2. Step 2: Convert to fraction form
    113,463.88/156,570.56 = 66,889.32/x
  3. Step 3: Cross multiply
    113,463.88x = 156,570.56 × 66,889.32
  4. Step 4: Simplify right side
    113,463.88x = 10,472,898,290.42
  5. Step 5: Solve for x
    x = 10,472,898,290.42/113,463.88
  6. Step 6: Final answer
    x = 92,301.61

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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.