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Finding the Fourth Proportional to 92,670,493.50, 127,431,784.71 and 80,426,092.86

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Solution

The fourth proportional to 92,670,493.50, 127,431,784.71 and 80,426,092.86 is: 110,594,431.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,670,493.50 : 127,431,784.71 = 80,426,092.86 : x
  2. Step 2: Convert to fraction form
    92,670,493.50/127,431,784.71 = 80,426,092.86/x
  3. Step 3: Cross multiply
    92,670,493.50x = 127,431,784.71 × 80,426,092.86
  4. Step 4: Simplify right side
    92,670,493.50x = 10,248,840,550,401,988
  5. Step 5: Solve for x
    x = 10,248,840,550,401,988/92,670,493.50
  6. Step 6: Final answer
    x = 110,594,431.55

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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.