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Finding the Fourth Proportional to 58,021.76, 86,890.16 and 28,343.92

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Solution

The fourth proportional to 58,021.76, 86,890.16 and 28,343.92 is: 42,446.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,021.76 : 86,890.16 = 28,343.92 : x
  2. Step 2: Convert to fraction form
    58,021.76/86,890.16 = 28,343.92/x
  3. Step 3: Cross multiply
    58,021.76x = 86,890.16 × 28,343.92
  4. Step 4: Simplify right side
    58,021.76x = 2,462,807,743.83
  5. Step 5: Solve for x
    x = 2,462,807,743.83/58,021.76
  6. Step 6: Final answer
    x = 42,446.28

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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.