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Finding the Fourth Proportional to 98,600.70, 147,730.95 and 45,902.10

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Solution

The fourth proportional to 98,600.70, 147,730.95 and 45,902.10 is: 68,773.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,600.70 : 147,730.95 = 45,902.10 : x
  2. Step 2: Convert to fraction form
    98,600.70/147,730.95 = 45,902.10/x
  3. Step 3: Cross multiply
    98,600.70x = 147,730.95 × 45,902.10
  4. Step 4: Simplify right side
    98,600.70x = 6,781,160,840.00
  5. Step 5: Solve for x
    x = 6,781,160,840.00/98,600.70
  6. Step 6: Final answer
    x = 68,773.96

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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.