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Finding the Fourth Proportional to 78,366.70, 108,148.19 and 46,103.59

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Solution

The fourth proportional to 78,366.70, 108,148.19 and 46,103.59 is: 63,624.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,366.70 : 108,148.19 = 46,103.59 : x
  2. Step 2: Convert to fraction form
    78,366.70/108,148.19 = 46,103.59/x
  3. Step 3: Cross multiply
    78,366.70x = 108,148.19 × 46,103.59
  4. Step 4: Simplify right side
    78,366.70x = 4,986,019,811.00
  5. Step 5: Solve for x
    x = 4,986,019,811.00/78,366.70
  6. Step 6: Final answer
    x = 63,624.22

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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.