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Finding the Fourth Proportional to 58,588.72, 87,864.95 and 21,143.97

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Solution

The fourth proportional to 58,588.72, 87,864.95 and 21,143.97 is: 31,709.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,588.72 : 87,864.95 = 21,143.97 : x
  2. Step 2: Convert to fraction form
    58,588.72/87,864.95 = 21,143.97/x
  3. Step 3: Cross multiply
    58,588.72x = 87,864.95 × 21,143.97
  4. Step 4: Simplify right side
    58,588.72x = 1,857,813,919.71
  5. Step 5: Solve for x
    x = 1,857,813,919.71/58,588.72
  6. Step 6: Final answer
    x = 31,709.41

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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.