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Finding the Fourth Proportional to 372,905.20, 559,357.80 and 106,681.60

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Solution

The fourth proportional to 372,905.20, 559,357.80 and 106,681.60 is: 160,022.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,905.20 : 559,357.80 = 106,681.60 : x
  2. Step 2: Convert to fraction form
    372,905.20/559,357.80 = 106,681.60/x
  3. Step 3: Cross multiply
    372,905.20x = 559,357.80 × 106,681.60
  4. Step 4: Simplify right side
    372,905.20x = 59,673,185,076.48
  5. Step 5: Solve for x
    x = 59,673,185,076.48/372,905.20
  6. Step 6: Final answer
    x = 160,022.40

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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.