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Finding the Fourth Proportional to 92,210.20, 127,251.48 and 56,392.60

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Solution

The fourth proportional to 92,210.20, 127,251.48 and 56,392.60 is: 77,822.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,210.20 : 127,251.48 = 56,392.60 : x
  2. Step 2: Convert to fraction form
    92,210.20/127,251.48 = 56,392.60/x
  3. Step 3: Cross multiply
    92,210.20x = 127,251.48 × 56,392.60
  4. Step 4: Simplify right side
    92,210.20x = 7,176,041,811.05
  5. Step 5: Solve for x
    x = 7,176,041,811.05/92,210.20
  6. Step 6: Final answer
    x = 77,822.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.