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Finding the Fourth Proportional to 56,486.68, 84,753.95 and 28,391.93

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Solution

The fourth proportional to 56,486.68, 84,753.95 and 28,391.93 is: 42,599.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,486.68 : 84,753.95 = 28,391.93 : x
  2. Step 2: Convert to fraction form
    56,486.68/84,753.95 = 28,391.93/x
  3. Step 3: Cross multiply
    56,486.68x = 84,753.95 × 28,391.93
  4. Step 4: Simplify right side
    56,486.68x = 2,406,328,215.62
  5. Step 5: Solve for x
    x = 2,406,328,215.62/56,486.68
  6. Step 6: Final answer
    x = 42,599.92

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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.