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Finding the Fourth Proportional to 372,972.40, 559,458.60 and 313,923.40

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Solution

The fourth proportional to 372,972.40, 559,458.60 and 313,923.40 is: 470,885.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,972.40 : 559,458.60 = 313,923.40 : x
  2. Step 2: Convert to fraction form
    372,972.40/559,458.60 = 313,923.40/x
  3. Step 3: Cross multiply
    372,972.40x = 559,458.60 × 313,923.40
  4. Step 4: Simplify right side
    372,972.40x = 175,627,145,871.24
  5. Step 5: Solve for x
    x = 175,627,145,871.24/372,972.40
  6. Step 6: Final answer
    x = 470,885.10

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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.