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Finding the Fourth Proportional to 410,411.80, 615,617.70 and 114,923.80

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Solution

The fourth proportional to 410,411.80, 615,617.70 and 114,923.80 is: 172,385.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,411.80 : 615,617.70 = 114,923.80 : x
  2. Step 2: Convert to fraction form
    410,411.80/615,617.70 = 114,923.80/x
  3. Step 3: Cross multiply
    410,411.80x = 615,617.70 × 114,923.80
  4. Step 4: Simplify right side
    410,411.80x = 70,749,125,431.26
  5. Step 5: Solve for x
    x = 70,749,125,431.26/410,411.80
  6. Step 6: Final answer
    x = 172,385.70

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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.