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Finding the Fourth Proportional to 114,465.59, 157,978.64 and 63,489.65

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Solution

The fourth proportional to 114,465.59, 157,978.64 and 63,489.65 is: 87,624.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,465.59 : 157,978.64 = 63,489.65 : x
  2. Step 2: Convert to fraction form
    114,465.59/157,978.64 = 63,489.65/x
  3. Step 3: Cross multiply
    114,465.59x = 157,978.64 × 63,489.65
  4. Step 4: Simplify right side
    114,465.59x = 10,030,008,561.08
  5. Step 5: Solve for x
    x = 10,030,008,561.08/114,465.59
  6. Step 6: Final answer
    x = 87,624.66

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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.