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Finding the Fourth Proportional to 60,685.20, 91,027.80 and 60,296.40

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Solution

The fourth proportional to 60,685.20, 91,027.80 and 60,296.40 is: 90,444.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,685.20 : 91,027.80 = 60,296.40 : x
  2. Step 2: Convert to fraction form
    60,685.20/91,027.80 = 60,296.40/x
  3. Step 3: Cross multiply
    60,685.20x = 91,027.80 × 60,296.40
  4. Step 4: Simplify right side
    60,685.20x = 5,488,648,639.92
  5. Step 5: Solve for x
    x = 5,488,648,639.92/60,685.20
  6. Step 6: Final answer
    x = 90,444.60

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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.