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Finding the Fourth Proportional to 91,657.83, 126,474.98 and 51,368.43

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Solution

The fourth proportional to 91,657.83, 126,474.98 and 51,368.43 is: 70,881.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,657.83 : 126,474.98 = 51,368.43 : x
  2. Step 2: Convert to fraction form
    91,657.83/126,474.98 = 51,368.43/x
  3. Step 3: Cross multiply
    91,657.83x = 126,474.98 × 51,368.43
  4. Step 4: Simplify right side
    91,657.83x = 6,496,820,900.04
  5. Step 5: Solve for x
    x = 6,496,820,900.04/91,657.83
  6. Step 6: Final answer
    x = 70,881.24

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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.