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Finding the Fourth Proportional to 58,139.40, 87,209.10 and 16,586.40

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Solution

The fourth proportional to 58,139.40, 87,209.10 and 16,586.40 is: 24,879.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,139.40 : 87,209.10 = 16,586.40 : x
  2. Step 2: Convert to fraction form
    58,139.40/87,209.10 = 16,586.40/x
  3. Step 3: Cross multiply
    58,139.40x = 87,209.10 × 16,586.40
  4. Step 4: Simplify right side
    58,139.40x = 1,446,485,016.24
  5. Step 5: Solve for x
    x = 1,446,485,016.24/58,139.40
  6. Step 6: Final answer
    x = 24,879.60

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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.