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Finding the Fourth Proportional to 89,897.92, 124,594.80 and 88,216.40

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Solution

The fourth proportional to 89,897.92, 124,594.80 and 88,216.40 is: 122,264.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,897.92 : 124,594.80 = 88,216.40 : x
  2. Step 2: Convert to fraction form
    89,897.92/124,594.80 = 88,216.40/x
  3. Step 3: Cross multiply
    89,897.92x = 124,594.80 × 88,216.40
  4. Step 4: Simplify right side
    89,897.92x = 10,991,305,165.24
  5. Step 5: Solve for x
    x = 10,991,305,165.24/89,897.92
  6. Step 6: Final answer
    x = 122,264.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.