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Finding the Fourth Proportional to 67,970.88, 93,792.90 and 39,692.94

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Solution

The fourth proportional to 67,970.88, 93,792.90 and 39,692.94 is: 54,772.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,970.88 : 93,792.90 = 39,692.94 : x
  2. Step 2: Convert to fraction form
    67,970.88/93,792.90 = 39,692.94/x
  3. Step 3: Cross multiply
    67,970.88x = 93,792.90 × 39,692.94
  4. Step 4: Simplify right side
    67,970.88x = 3,722,915,952.13
  5. Step 5: Solve for x
    x = 3,722,915,952.13/67,970.88
  6. Step 6: Final answer
    x = 54,772.22

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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.