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Finding the Fourth Proportional to 78,637.46, 108,522.76 and 44,649.11

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Solution

The fourth proportional to 78,637.46, 108,522.76 and 44,649.11 is: 61,617.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,637.46 : 108,522.76 = 44,649.11 : x
  2. Step 2: Convert to fraction form
    78,637.46/108,522.76 = 44,649.11/x
  3. Step 3: Cross multiply
    78,637.46x = 108,522.76 × 44,649.11
  4. Step 4: Simplify right side
    78,637.46x = 4,845,444,281.70
  5. Step 5: Solve for x
    x = 4,845,444,281.70/78,637.46
  6. Step 6: Final answer
    x = 61,617.51

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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.