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Finding the Fourth Proportional to 122,061.16, 168,442.02 and 67,611.88

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Solution

The fourth proportional to 122,061.16, 168,442.02 and 67,611.88 is: 93,303.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,061.16 : 168,442.02 = 67,611.88 : x
  2. Step 2: Convert to fraction form
    122,061.16/168,442.02 = 67,611.88/x
  3. Step 3: Cross multiply
    122,061.16x = 168,442.02 × 67,611.88
  4. Step 4: Simplify right side
    122,061.16x = 11,388,681,643.20
  5. Step 5: Solve for x
    x = 11,388,681,643.20/122,061.16
  6. Step 6: Final answer
    x = 93,303.08

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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.