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Finding the Fourth Proportional to 59,900.60, 89,850.90 and 38,905.40

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Solution

The fourth proportional to 59,900.60, 89,850.90 and 38,905.40 is: 58,358.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,900.60 : 89,850.90 = 38,905.40 : x
  2. Step 2: Convert to fraction form
    59,900.60/89,850.90 = 38,905.40/x
  3. Step 3: Cross multiply
    59,900.60x = 89,850.90 × 38,905.40
  4. Step 4: Simplify right side
    59,900.60x = 3,495,685,204.86
  5. Step 5: Solve for x
    x = 3,495,685,204.86/59,900.60
  6. Step 6: Final answer
    x = 58,358.10

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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.