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Finding the Fourth Proportional to 113,504.97, 156,561.86 and 70,989.69

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Solution

The fourth proportional to 113,504.97, 156,561.86 and 70,989.69 is: 97,918.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,504.97 : 156,561.86 = 70,989.69 : x
  2. Step 2: Convert to fraction form
    113,504.97/156,561.86 = 70,989.69/x
  3. Step 3: Cross multiply
    113,504.97x = 156,561.86 × 70,989.69
  4. Step 4: Simplify right side
    113,504.97x = 11,114,278,084.70
  5. Step 5: Solve for x
    x = 11,114,278,084.70/113,504.97
  6. Step 6: Final answer
    x = 97,918.87

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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.