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Finding the Fourth Proportional to 62,621.87, 86,421.72 and 37,143.32

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Solution

The fourth proportional to 62,621.87, 86,421.72 and 37,143.32 is: 51,259.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,621.87 : 86,421.72 = 37,143.32 : x
  2. Step 2: Convert to fraction form
    62,621.87/86,421.72 = 37,143.32/x
  3. Step 3: Cross multiply
    62,621.87x = 86,421.72 × 37,143.32
  4. Step 4: Simplify right side
    62,621.87x = 3,209,989,600.91
  5. Step 5: Solve for x
    x = 3,209,989,600.91/62,621.87
  6. Step 6: Final answer
    x = 51,259.88

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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.