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Finding the Fourth Proportional to 91,310.40, 126,005.94 and 51,024.49

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Solution

The fourth proportional to 91,310.40, 126,005.94 and 51,024.49 is: 70,412.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,310.40 : 126,005.94 = 51,024.49 : x
  2. Step 2: Convert to fraction form
    91,310.40/126,005.94 = 51,024.49/x
  3. Step 3: Cross multiply
    91,310.40x = 126,005.94 × 51,024.49
  4. Step 4: Simplify right side
    91,310.40x = 6,429,389,468.19
  5. Step 5: Solve for x
    x = 6,429,389,468.19/91,310.40
  6. Step 6: Final answer
    x = 70,412.45

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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.