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Finding the Fourth Proportional to 90,550, 124,952.34 and 52,311.16

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Solution

The fourth proportional to 90,550, 124,952.34 and 52,311.16 is: 72,185.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,550 : 124,952.34 = 52,311.16 : x
  2. Step 2: Convert to fraction form
    90,550/124,952.34 = 52,311.16/x
  3. Step 3: Cross multiply
    90,550x = 124,952.34 × 52,311.16
  4. Step 4: Simplify right side
    90,550x = 6,536,401,850.11
  5. Step 5: Solve for x
    x = 6,536,401,850.11/90,550
  6. Step 6: Final answer
    x = 72,185.55

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1.5x scale

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.