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Finding the Fourth Proportional to 66,910.60, 99,601.43 and 65,913.76

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Solution

The fourth proportional to 66,910.60, 99,601.43 and 65,913.76 is: 98,117.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,910.60 : 99,601.43 = 65,913.76 : x
  2. Step 2: Convert to fraction form
    66,910.60/99,601.43 = 65,913.76/x
  3. Step 3: Cross multiply
    66,910.60x = 99,601.43 × 65,913.76
  4. Step 4: Simplify right side
    66,910.60x = 6,565,104,752.68
  5. Step 5: Solve for x
    x = 6,565,104,752.68/66,910.60
  6. Step 6: Final answer
    x = 98,117.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.