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Finding the Fourth Proportional to 58,390.90, 87,586.29 and 18,948.01

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Solution

The fourth proportional to 58,390.90, 87,586.29 and 18,948.01 is: 28,422.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,390.90 : 87,586.29 = 18,948.01 : x
  2. Step 2: Convert to fraction form
    58,390.90/87,586.29 = 18,948.01/x
  3. Step 3: Cross multiply
    58,390.90x = 87,586.29 × 18,948.01
  4. Step 4: Simplify right side
    58,390.90x = 1,659,585,898.78
  5. Step 5: Solve for x
    x = 1,659,585,898.78/58,390.90
  6. Step 6: Final answer
    x = 28,422.00

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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.