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Finding the Fourth Proportional to 78,494.40, 108,316.62 and 44,503.56

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Solution

The fourth proportional to 78,494.40, 108,316.62 and 44,503.56 is: 61,411.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,494.40 : 108,316.62 = 44,503.56 : x
  2. Step 2: Convert to fraction form
    78,494.40/108,316.62 = 44,503.56/x
  3. Step 3: Cross multiply
    78,494.40x = 108,316.62 × 44,503.56
  4. Step 4: Simplify right side
    78,494.40x = 4,820,475,197.17
  5. Step 5: Solve for x
    x = 4,820,475,197.17/78,494.40
  6. Step 6: Final answer
    x = 61,411.71

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1.5x scale

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.