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Finding the Fourth Proportional to 58,013.78, 87,009.73 and 28,412.73

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Solution

The fourth proportional to 58,013.78, 87,009.73 and 28,412.73 is: 42,613.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,013.78 : 87,009.73 = 28,412.73 : x
  2. Step 2: Convert to fraction form
    58,013.78/87,009.73 = 28,412.73/x
  3. Step 3: Cross multiply
    58,013.78x = 87,009.73 × 28,412.73
  4. Step 4: Simplify right side
    58,013.78x = 2,472,183,894.83
  5. Step 5: Solve for x
    x = 2,472,183,894.83/58,013.78
  6. Step 6: Final answer
    x = 42,613.74

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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.