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Finding the Fourth Proportional to 112,495.40, 168,768.70 and 65,724.20

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Solution

The fourth proportional to 112,495.40, 168,768.70 and 65,724.20 is: 98,601.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,495.40 : 168,768.70 = 65,724.20 : x
  2. Step 2: Convert to fraction form
    112,495.40/168,768.70 = 65,724.20/x
  3. Step 3: Cross multiply
    112,495.40x = 168,768.70 × 65,724.20
  4. Step 4: Simplify right side
    112,495.40x = 11,092,187,792.54
  5. Step 5: Solve for x
    x = 11,092,187,792.54/112,495.40
  6. Step 6: Final answer
    x = 98,601.26

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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.