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Finding the Fourth Proportional to 114,387.93, 157,855.64 and 63,399.78

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Solution

The fourth proportional to 114,387.93, 157,855.64 and 63,399.78 is: 87,491.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,387.93 : 157,855.64 = 63,399.78 : x
  2. Step 2: Convert to fraction form
    114,387.93/157,855.64 = 63,399.78/x
  3. Step 3: Cross multiply
    114,387.93x = 157,855.64 × 63,399.78
  4. Step 4: Simplify right side
    114,387.93x = 10,008,012,530.76
  5. Step 5: Solve for x
    x = 10,008,012,530.76/114,387.93
  6. Step 6: Final answer
    x = 87,491.86

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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.