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Finding the Fourth Proportional to 42,878.34, 63,798.53 and 41,806.98

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Solution

The fourth proportional to 42,878.34, 63,798.53 and 41,806.98 is: 62,204.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,878.34 : 63,798.53 = 41,806.98 : x
  2. Step 2: Convert to fraction form
    42,878.34/63,798.53 = 41,806.98/x
  3. Step 3: Cross multiply
    42,878.34x = 63,798.53 × 41,806.98
  4. Step 4: Simplify right side
    42,878.34x = 2,667,223,658.70
  5. Step 5: Solve for x
    x = 2,667,223,658.70/42,878.34
  6. Step 6: Final answer
    x = 62,204.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.