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Finding the Fourth Proportional to 39,889.40, 59,809.14 and 14,916.28

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Solution

The fourth proportional to 39,889.40, 59,809.14 and 14,916.28 is: 22,365.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,889.40 : 59,809.14 = 14,916.28 : x
  2. Step 2: Convert to fraction form
    39,889.40/59,809.14 = 14,916.28/x
  3. Step 3: Cross multiply
    39,889.40x = 59,809.14 × 14,916.28
  4. Step 4: Simplify right side
    39,889.40x = 892,129,878.80
  5. Step 5: Solve for x
    x = 892,129,878.80/39,889.40
  6. Step 6: Final answer
    x = 22,365.09

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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.