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Finding the Fourth Proportional to 88,300.80, 121,867.20 and 67,046.40

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Solution

The fourth proportional to 88,300.80, 121,867.20 and 67,046.40 is: 92,533.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,300.80 : 121,867.20 = 67,046.40 : x
  2. Step 2: Convert to fraction form
    88,300.80/121,867.20 = 67,046.40/x
  3. Step 3: Cross multiply
    88,300.80x = 121,867.20 × 67,046.40
  4. Step 4: Simplify right side
    88,300.80x = 8,170,757,038.08
  5. Step 5: Solve for x
    x = 8,170,757,038.08/88,300.80
  6. Step 6: Final answer
    x = 92,533.22

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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.