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Finding the Fourth Proportional to 58,461.78, 87,693.48 and 19,019.10

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Solution

The fourth proportional to 58,461.78, 87,693.48 and 19,019.10 is: 28,528.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,461.78 : 87,693.48 = 19,019.10 : x
  2. Step 2: Convert to fraction form
    58,461.78/87,693.48 = 19,019.10/x
  3. Step 3: Cross multiply
    58,461.78x = 87,693.48 × 19,019.10
  4. Step 4: Simplify right side
    58,461.78x = 1,667,851,065.47
  5. Step 5: Solve for x
    x = 1,667,851,065.47/58,461.78
  6. Step 6: Final answer
    x = 28,528.91

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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.