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Finding the Fourth Proportional to 68,897.80, 103,346.70 and 29,458.90

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Solution

The fourth proportional to 68,897.80, 103,346.70 and 29,458.90 is: 44,188.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,897.80 : 103,346.70 = 29,458.90 : x
  2. Step 2: Convert to fraction form
    68,897.80/103,346.70 = 29,458.90/x
  3. Step 3: Cross multiply
    68,897.80x = 103,346.70 × 29,458.90
  4. Step 4: Simplify right side
    68,897.80x = 3,044,480,100.63
  5. Step 5: Solve for x
    x = 3,044,480,100.63/68,897.80
  6. Step 6: Final answer
    x = 44,188.35

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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.