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Finding the Fourth Proportional to 59,718.60, 89,577.90 and 20,320.20

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Solution

The fourth proportional to 59,718.60, 89,577.90 and 20,320.20 is: 30,480.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,718.60 : 89,577.90 = 20,320.20 : x
  2. Step 2: Convert to fraction form
    59,718.60/89,577.90 = 20,320.20/x
  3. Step 3: Cross multiply
    59,718.60x = 89,577.90 × 20,320.20
  4. Step 4: Simplify right side
    59,718.60x = 1,820,240,843.58
  5. Step 5: Solve for x
    x = 1,820,240,843.58/59,718.60
  6. Step 6: Final answer
    x = 30,480.30

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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.