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Finding the Fourth Proportional to 607,304.40, 910,978.20 and 186,579.60

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Solution

The fourth proportional to 607,304.40, 910,978.20 and 186,579.60 is: 279,876.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,304.40 : 910,978.20 = 186,579.60 : x
  2. Step 2: Convert to fraction form
    607,304.40/910,978.20 = 186,579.60/x
  3. Step 3: Cross multiply
    607,304.40x = 910,978.20 × 186,579.60
  4. Step 4: Simplify right side
    607,304.40x = 169,969,948,164.72
  5. Step 5: Solve for x
    x = 169,969,948,164.72/607,304.40
  6. Step 6: Final answer
    x = 279,876.04

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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.