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Finding the Fourth Proportional to 561,671.19, 842,506.78 and 187,694.19

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Solution

The fourth proportional to 561,671.19, 842,506.78 and 187,694.19 is: 281,541.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,671.19 : 842,506.78 = 187,694.19 : x
  2. Step 2: Convert to fraction form
    561,671.19/842,506.78 = 187,694.19/x
  3. Step 3: Cross multiply
    561,671.19x = 842,506.78 × 187,694.19
  4. Step 4: Simplify right side
    561,671.19x = 158,133,627,641.61
  5. Step 5: Solve for x
    x = 158,133,627,641.61/561,671.19
  6. Step 6: Final answer
    x = 281,541.28

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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.