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Finding the Fourth Proportional to 207,235.61, 310,853.39 and 57,475.90

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Solution

The fourth proportional to 207,235.61, 310,853.39 and 57,475.90 is: 86,213.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,235.61 : 310,853.39 = 57,475.90 : x
  2. Step 2: Convert to fraction form
    207,235.61/310,853.39 = 57,475.90/x
  3. Step 3: Cross multiply
    207,235.61x = 310,853.39 × 57,475.90
  4. Step 4: Simplify right side
    207,235.61x = 17,866,576,804.03
  5. Step 5: Solve for x
    x = 17,866,576,804.03/207,235.61
  6. Step 6: Final answer
    x = 86,213.84

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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.