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Finding the Fourth Proportional to 90,913.62, 125,495.01 and 53,200.02

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Solution

The fourth proportional to 90,913.62, 125,495.01 and 53,200.02 is: 73,436.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,913.62 : 125,495.01 = 53,200.02 : x
  2. Step 2: Convert to fraction form
    90,913.62/125,495.01 = 53,200.02/x
  3. Step 3: Cross multiply
    90,913.62x = 125,495.01 × 53,200.02
  4. Step 4: Simplify right side
    90,913.62x = 6,676,337,041.90
  5. Step 5: Solve for x
    x = 6,676,337,041.90/90,913.62
  6. Step 6: Final answer
    x = 73,436.05

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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.