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Finding the Fourth Proportional to 76,591.84, 105,694.88 and 42,600.20

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Solution

The fourth proportional to 76,591.84, 105,694.88 and 42,600.20 is: 58,787.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,591.84 : 105,694.88 = 42,600.20 : x
  2. Step 2: Convert to fraction form
    76,591.84/105,694.88 = 42,600.20/x
  3. Step 3: Cross multiply
    76,591.84x = 105,694.88 × 42,600.20
  4. Step 4: Simplify right side
    76,591.84x = 4,502,623,026.98
  5. Step 5: Solve for x
    x = 4,502,623,026.98/76,591.84
  6. Step 6: Final answer
    x = 58,787.24

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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.