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Finding the Fourth Proportional to 58,006.87, 86,921.74 and 43,143.91

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Solution

The fourth proportional to 58,006.87, 86,921.74 and 43,143.91 is: 64,649.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,006.87 : 86,921.74 = 43,143.91 : x
  2. Step 2: Convert to fraction form
    58,006.87/86,921.74 = 43,143.91/x
  3. Step 3: Cross multiply
    58,006.87x = 86,921.74 × 43,143.91
  4. Step 4: Simplify right side
    58,006.87x = 3,750,143,727.60
  5. Step 5: Solve for x
    x = 3,750,143,727.60/58,006.87
  6. Step 6: Final answer
    x = 64,649.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.