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Finding the Fourth Proportional to 78,308, 108,065.16 and 44,774.72

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Solution

The fourth proportional to 78,308, 108,065.16 and 44,774.72 is: 61,789.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,308 : 108,065.16 = 44,774.72 : x
  2. Step 2: Convert to fraction form
    78,308/108,065.16 = 44,774.72/x
  3. Step 3: Cross multiply
    78,308x = 108,065.16 × 44,774.72
  4. Step 4: Simplify right side
    78,308x = 4,838,587,280.76
  5. Step 5: Solve for x
    x = 4,838,587,280.76/78,308
  6. Step 6: Final answer
    x = 61,789.18

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.