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Finding the Fourth Proportional to 113,620.93, 156,810.63 and 65,876.29

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Solution

The fourth proportional to 113,620.93, 156,810.63 and 65,876.29 is: 90,917.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,620.93 : 156,810.63 = 65,876.29 : x
  2. Step 2: Convert to fraction form
    113,620.93/156,810.63 = 65,876.29/x
  3. Step 3: Cross multiply
    113,620.93x = 156,810.63 × 65,876.29
  4. Step 4: Simplify right side
    113,620.93x = 10,330,102,391.97
  5. Step 5: Solve for x
    x = 10,330,102,391.97/113,620.93
  6. Step 6: Final answer
    x = 90,917.25

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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.