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Finding the Fourth Proportional to 98,317.64, 135,646.26 and 58,017.80

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Solution

The fourth proportional to 98,317.64, 135,646.26 and 58,017.80 is: 80,045.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,317.64 : 135,646.26 = 58,017.80 : x
  2. Step 2: Convert to fraction form
    98,317.64/135,646.26 = 58,017.80/x
  3. Step 3: Cross multiply
    98,317.64x = 135,646.26 × 58,017.80
  4. Step 4: Simplify right side
    98,317.64x = 7,869,897,583.43
  5. Step 5: Solve for x
    x = 7,869,897,583.43/98,317.64
  6. Step 6: Final answer
    x = 80,045.63

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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.