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Finding the Fourth Proportional to 99,280.60, 148,920.90 and 59,914.60

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Solution

The fourth proportional to 99,280.60, 148,920.90 and 59,914.60 is: 89,871.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,280.60 : 148,920.90 = 59,914.60 : x
  2. Step 2: Convert to fraction form
    99,280.60/148,920.90 = 59,914.60/x
  3. Step 3: Cross multiply
    99,280.60x = 148,920.90 × 59,914.60
  4. Step 4: Simplify right side
    99,280.60x = 8,922,536,155.14
  5. Step 5: Solve for x
    x = 8,922,536,155.14/99,280.60
  6. Step 6: Final answer
    x = 89,871.90

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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.