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Finding the Fourth Proportional to 60,378.58, 90,715.47 and 57,021.58

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Solution

The fourth proportional to 60,378.58, 90,715.47 and 57,021.58 is: 85,671.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,378.58 : 90,715.47 = 57,021.58 : x
  2. Step 2: Convert to fraction form
    60,378.58/90,715.47 = 57,021.58/x
  3. Step 3: Cross multiply
    60,378.58x = 90,715.47 × 57,021.58
  4. Step 4: Simplify right side
    60,378.58x = 5,172,739,429.84
  5. Step 5: Solve for x
    x = 5,172,739,429.84/60,378.58
  6. Step 6: Final answer
    x = 85,671.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.