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Finding the Fourth Proportional to 404,908.40, 607,391.40 and 124,425.20

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Solution

The fourth proportional to 404,908.40, 607,391.40 and 124,425.20 is: 186,646.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,908.40 : 607,391.40 = 124,425.20 : x
  2. Step 2: Convert to fraction form
    404,908.40/607,391.40 = 124,425.20/x
  3. Step 3: Cross multiply
    404,908.40x = 607,391.40 × 124,425.20
  4. Step 4: Simplify right side
    404,908.40x = 75,574,796,423.28
  5. Step 5: Solve for x
    x = 75,574,796,423.28/404,908.40
  6. Step 6: Final answer
    x = 186,646.65

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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.