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Finding the Fourth Proportional to 55,328.78, 82,950.63 and 28,646.16

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Solution

The fourth proportional to 55,328.78, 82,950.63 and 28,646.16 is: 42,947.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,328.78 : 82,950.63 = 28,646.16 : x
  2. Step 2: Convert to fraction form
    55,328.78/82,950.63 = 28,646.16/x
  3. Step 3: Cross multiply
    55,328.78x = 82,950.63 × 28,646.16
  4. Step 4: Simplify right side
    55,328.78x = 2,376,217,019.08
  5. Step 5: Solve for x
    x = 2,376,217,019.08/55,328.78
  6. Step 6: Final answer
    x = 42,947.22

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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.