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Finding the Fourth Proportional to 59,885.80, 89,828.70 and 20,444.20

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Solution

The fourth proportional to 59,885.80, 89,828.70 and 20,444.20 is: 30,666.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,885.80 : 89,828.70 = 20,444.20 : x
  2. Step 2: Convert to fraction form
    59,885.80/89,828.70 = 20,444.20/x
  3. Step 3: Cross multiply
    59,885.80x = 89,828.70 × 20,444.20
  4. Step 4: Simplify right side
    59,885.80x = 1,836,475,908.54
  5. Step 5: Solve for x
    x = 1,836,475,908.54/59,885.80
  6. Step 6: Final answer
    x = 30,666.30

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Double scale
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Similar ratio
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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.