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Finding the Fourth Proportional to 100,702.18, 150,724.71 and 74,041.10

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Solution

The fourth proportional to 100,702.18, 150,724.71 and 74,041.10 is: 110,820.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,702.18 : 150,724.71 = 74,041.10 : x
  2. Step 2: Convert to fraction form
    100,702.18/150,724.71 = 74,041.10/x
  3. Step 3: Cross multiply
    100,702.18x = 150,724.71 × 74,041.10
  4. Step 4: Simplify right side
    100,702.18x = 11,159,823,325.58
  5. Step 5: Solve for x
    x = 11,159,823,325.58/100,702.18
  6. Step 6: Final answer
    x = 110,820.08

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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.