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Finding the Fourth Proportional to 78,656.48, 108,513.72 and 44,657.60

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Solution

The fourth proportional to 78,656.48, 108,513.72 and 44,657.60 is: 61,609.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,656.48 : 108,513.72 = 44,657.60 : x
  2. Step 2: Convert to fraction form
    78,656.48/108,513.72 = 44,657.60/x
  3. Step 3: Cross multiply
    78,656.48x = 108,513.72 × 44,657.60
  4. Step 4: Simplify right side
    78,656.48x = 4,845,962,302.27
  5. Step 5: Solve for x
    x = 4,845,962,302.27/78,656.48
  6. Step 6: Final answer
    x = 61,609.19

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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.