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Finding the Fourth Proportional to 101,870.83, 140,575.07 and 56,546.60

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Solution

The fourth proportional to 101,870.83, 140,575.07 and 56,546.60 is: 78,030.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,870.83 : 140,575.07 = 56,546.60 : x
  2. Step 2: Convert to fraction form
    101,870.83/140,575.07 = 56,546.60/x
  3. Step 3: Cross multiply
    101,870.83x = 140,575.07 × 56,546.60
  4. Step 4: Simplify right side
    101,870.83x = 7,949,042,253.26
  5. Step 5: Solve for x
    x = 7,949,042,253.26/101,870.83
  6. Step 6: Final answer
    x = 78,030.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.