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Finding the Fourth Proportional to 67,590, 101,316.96 and 28,168.92

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Solution

The fourth proportional to 67,590, 101,316.96 and 28,168.92 is: 42,225.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,590 : 101,316.96 = 28,168.92 : x
  2. Step 2: Convert to fraction form
    67,590/101,316.96 = 28,168.92/x
  3. Step 3: Cross multiply
    67,590x = 101,316.96 × 28,168.92
  4. Step 4: Simplify right side
    67,590x = 2,853,989,340.88
  5. Step 5: Solve for x
    x = 2,853,989,340.88/67,590
  6. Step 6: Final answer
    x = 42,225.02

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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.