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Finding the Fourth Proportional to 29,641.98, 40,907.25 and 17,070.78

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Solution

The fourth proportional to 29,641.98, 40,907.25 and 17,070.78 is: 23,558.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,641.98 : 40,907.25 = 17,070.78 : x
  2. Step 2: Convert to fraction form
    29,641.98/40,907.25 = 17,070.78/x
  3. Step 3: Cross multiply
    29,641.98x = 40,907.25 × 17,070.78
  4. Step 4: Simplify right side
    29,641.98x = 698,318,665.16
  5. Step 5: Solve for x
    x = 698,318,665.16/29,641.98
  6. Step 6: Final answer
    x = 23,558.44

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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.