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Finding the Fourth Proportional to 14,009.60, 19,334.16 and 8,043.20

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Solution

The fourth proportional to 14,009.60, 19,334.16 and 8,043.20 is: 11,100.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,009.60 : 19,334.16 = 8,043.20 : x
  2. Step 2: Convert to fraction form
    14,009.60/19,334.16 = 8,043.20/x
  3. Step 3: Cross multiply
    14,009.60x = 19,334.16 × 8,043.20
  4. Step 4: Simplify right side
    14,009.60x = 155,508,515.71
  5. Step 5: Solve for x
    x = 155,508,515.71/14,009.60
  6. Step 6: Final answer
    x = 11,100.14

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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.