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Finding the Fourth Proportional to 58,170.76, 87,259.38 and 18,724.84

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Solution

The fourth proportional to 58,170.76, 87,259.38 and 18,724.84 is: 28,088.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,170.76 : 87,259.38 = 18,724.84 : x
  2. Step 2: Convert to fraction form
    58,170.76/87,259.38 = 18,724.84/x
  3. Step 3: Cross multiply
    58,170.76x = 87,259.38 × 18,724.84
  4. Step 4: Simplify right side
    58,170.76x = 1,633,917,929.00
  5. Step 5: Solve for x
    x = 1,633,917,929.00/58,170.76
  6. Step 6: Final answer
    x = 28,088.30

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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.