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Finding the Fourth Proportional to 98,915.86, 136,503.39 and 53,593.53

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Solution

The fourth proportional to 98,915.86, 136,503.39 and 53,593.53 is: 73,958.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,915.86 : 136,503.39 = 53,593.53 : x
  2. Step 2: Convert to fraction form
    98,915.86/136,503.39 = 53,593.53/x
  3. Step 3: Cross multiply
    98,915.86x = 136,503.39 × 53,593.53
  4. Step 4: Simplify right side
    98,915.86x = 7,315,697,844.55
  5. Step 5: Solve for x
    x = 7,315,697,844.55/98,915.86
  6. Step 6: Final answer
    x = 73,958.80

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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.