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Finding the Fourth Proportional to 67,653.84, 93,408.24 and 42,170.40

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Solution

The fourth proportional to 67,653.84, 93,408.24 and 42,170.40 is: 58,223.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,653.84 : 93,408.24 = 42,170.40 : x
  2. Step 2: Convert to fraction form
    67,653.84/93,408.24 = 42,170.40/x
  3. Step 3: Cross multiply
    67,653.84x = 93,408.24 × 42,170.40
  4. Step 4: Simplify right side
    67,653.84x = 3,939,062,844.10
  5. Step 5: Solve for x
    x = 3,939,062,844.10/67,653.84
  6. Step 6: Final answer
    x = 58,223.79

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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.