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Finding the Fourth Proportional to 298,815.45, 448,355.17 and 156,626.70

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Solution

The fourth proportional to 298,815.45, 448,355.17 and 156,626.70 is: 235,009.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,815.45 : 448,355.17 = 156,626.70 : x
  2. Step 2: Convert to fraction form
    298,815.45/448,355.17 = 156,626.70/x
  3. Step 3: Cross multiply
    298,815.45x = 448,355.17 × 156,626.70
  4. Step 4: Simplify right side
    298,815.45x = 70,224,390,705.04
  5. Step 5: Solve for x
    x = 70,224,390,705.04/298,815.45
  6. Step 6: Final answer
    x = 235,009.24

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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.