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Finding the Fourth Proportional to 113,325.80, 169,988.70 and 101,078.60

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Solution

The fourth proportional to 113,325.80, 169,988.70 and 101,078.60 is: 151,617.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,325.80 : 169,988.70 = 101,078.60 : x
  2. Step 2: Convert to fraction form
    113,325.80/169,988.70 = 101,078.60/x
  3. Step 3: Cross multiply
    113,325.80x = 169,988.70 × 101,078.60
  4. Step 4: Simplify right side
    113,325.80x = 17,182,219,811.82
  5. Step 5: Solve for x
    x = 17,182,219,811.82/113,325.80
  6. Step 6: Final answer
    x = 151,617.90

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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.