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Finding the Fourth Proportional to 29,649.98, 40,920.90 and 16,907.78

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Solution

The fourth proportional to 29,649.98, 40,920.90 and 16,907.78 is: 23,334.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,649.98 : 40,920.90 = 16,907.78 : x
  2. Step 2: Convert to fraction form
    29,649.98/40,920.90 = 16,907.78/x
  3. Step 3: Cross multiply
    29,649.98x = 40,920.90 × 16,907.78
  4. Step 4: Simplify right side
    29,649.98x = 691,881,574.60
  5. Step 5: Solve for x
    x = 691,881,574.60/29,649.98
  6. Step 6: Final answer
    x = 23,334.98

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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.