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Finding the Fourth Proportional to 404,962.40, 607,443.60 and 124,479.20

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Solution

The fourth proportional to 404,962.40, 607,443.60 and 124,479.20 is: 186,718.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,962.40 : 607,443.60 = 124,479.20 : x
  2. Step 2: Convert to fraction form
    404,962.40/607,443.60 = 124,479.20/x
  3. Step 3: Cross multiply
    404,962.40x = 607,443.60 × 124,479.20
  4. Step 4: Simplify right side
    404,962.40x = 75,614,093,373.12
  5. Step 5: Solve for x
    x = 75,614,093,373.12/404,962.40
  6. Step 6: Final answer
    x = 186,718.80

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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.