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Finding the Fourth Proportional to 408,356.48, 612,534.53 and 124,045.93

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Solution

The fourth proportional to 408,356.48, 612,534.53 and 124,045.93 is: 186,068.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,356.48 : 612,534.53 = 124,045.93 : x
  2. Step 2: Convert to fraction form
    408,356.48/612,534.53 = 124,045.93/x
  3. Step 3: Cross multiply
    408,356.48x = 612,534.53 × 124,045.93
  4. Step 4: Simplify right side
    408,356.48x = 75,982,416,506.75
  5. Step 5: Solve for x
    x = 75,982,416,506.75/408,356.48
  6. Step 6: Final answer
    x = 186,068.84

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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.