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Finding the Fourth Proportional to 372,645.40, 558,968.10 and 314,908.60

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Solution

The fourth proportional to 372,645.40, 558,968.10 and 314,908.60 is: 472,362.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,645.40 : 558,968.10 = 314,908.60 : x
  2. Step 2: Convert to fraction form
    372,645.40/558,968.10 = 314,908.60/x
  3. Step 3: Cross multiply
    372,645.40x = 558,968.10 × 314,908.60
  4. Step 4: Simplify right side
    372,645.40x = 176,023,861,815.66
  5. Step 5: Solve for x
    x = 176,023,861,815.66/372,645.40
  6. Step 6: Final answer
    x = 472,362.90

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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.