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Finding the Fourth Proportional to 113,028.70, 169,543.05 and 65,724.70

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Solution

The fourth proportional to 113,028.70, 169,543.05 and 65,724.70 is: 98,587.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,028.70 : 169,543.05 = 65,724.70 : x
  2. Step 2: Convert to fraction form
    113,028.70/169,543.05 = 65,724.70/x
  3. Step 3: Cross multiply
    113,028.70x = 169,543.05 × 65,724.70
  4. Step 4: Simplify right side
    113,028.70x = 11,143,166,098.34
  5. Step 5: Solve for x
    x = 11,143,166,098.34/113,028.70
  6. Step 6: Final answer
    x = 98,587.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.