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Finding the Fourth Proportional to 14,193.60, 19,588.08 and 7,906.40

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Solution

The fourth proportional to 14,193.60, 19,588.08 and 7,906.40 is: 10,911.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,193.60 : 19,588.08 = 7,906.40 : x
  2. Step 2: Convert to fraction form
    14,193.60/19,588.08 = 7,906.40/x
  3. Step 3: Cross multiply
    14,193.60x = 19,588.08 × 7,906.40
  4. Step 4: Simplify right side
    14,193.60x = 154,871,195.71
  5. Step 5: Solve for x
    x = 154,871,195.71/14,193.60
  6. Step 6: Final answer
    x = 10,911.34

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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.