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Finding the Fourth Proportional to 58,235.71, 87,331.47 and 20,788.80

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Solution

The fourth proportional to 58,235.71, 87,331.47 and 20,788.80 is: 31,175.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,235.71 : 87,331.47 = 20,788.80 : x
  2. Step 2: Convert to fraction form
    58,235.71/87,331.47 = 20,788.80/x
  3. Step 3: Cross multiply
    58,235.71x = 87,331.47 × 20,788.80
  4. Step 4: Simplify right side
    58,235.71x = 1,815,516,549.32
  5. Step 5: Solve for x
    x = 1,815,516,549.32/58,235.71
  6. Step 6: Final answer
    x = 31,175.31

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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.