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Finding the Fourth Proportional to 76,685.80, 105,799.02 and 44,402.80

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Solution

The fourth proportional to 76,685.80, 105,799.02 and 44,402.80 is: 61,260.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,685.80 : 105,799.02 = 44,402.80 : x
  2. Step 2: Convert to fraction form
    76,685.80/105,799.02 = 44,402.80/x
  3. Step 3: Cross multiply
    76,685.80x = 105,799.02 × 44,402.80
  4. Step 4: Simplify right side
    76,685.80x = 4,697,772,690.99
  5. Step 5: Solve for x
    x = 4,697,772,690.99/76,685.80
  6. Step 6: Final answer
    x = 61,260.01

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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.