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Finding the Fourth Proportional to 92,176.38, 127,212.93 and 56,390.18

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Solution

The fourth proportional to 92,176.38, 127,212.93 and 56,390.18 is: 77,824.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,176.38 : 127,212.93 = 56,390.18 : x
  2. Step 2: Convert to fraction form
    92,176.38/127,212.93 = 56,390.18/x
  3. Step 3: Cross multiply
    92,176.38x = 127,212.93 × 56,390.18
  4. Step 4: Simplify right side
    92,176.38x = 7,173,559,384.96
  5. Step 5: Solve for x
    x = 7,173,559,384.96/92,176.38
  6. Step 6: Final answer
    x = 77,824.27

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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.