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Finding the Fourth Proportional to 123,656.58, 170,646.57 and 67,068.90

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Solution

The fourth proportional to 123,656.58, 170,646.57 and 67,068.90 is: 92,555.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,656.58 : 170,646.57 = 67,068.90 : x
  2. Step 2: Convert to fraction form
    123,656.58/170,646.57 = 67,068.90/x
  3. Step 3: Cross multiply
    123,656.58x = 170,646.57 × 67,068.90
  4. Step 4: Simplify right side
    123,656.58x = 11,445,077,738.67
  5. Step 5: Solve for x
    x = 11,445,077,738.67/123,656.58
  6. Step 6: Final answer
    x = 92,555.35

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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.