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Finding the Fourth Proportional to 98,168.88, 147,175.32 and 42,726

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Solution

The fourth proportional to 98,168.88, 147,175.32 and 42,726 is: 64,055.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,168.88 : 147,175.32 = 42,726 : x
  2. Step 2: Convert to fraction form
    98,168.88/147,175.32 = 42,726/x
  3. Step 3: Cross multiply
    98,168.88x = 147,175.32 × 42,726
  4. Step 4: Simplify right side
    98,168.88x = 6,288,212,722.32
  5. Step 5: Solve for x
    x = 6,288,212,722.32/98,168.88
  6. Step 6: Final answer
    x = 64,055.05

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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.