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Finding the Fourth Proportional to 14,708.71, 20,298 and 7,994.32

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Solution

The fourth proportional to 14,708.71, 20,298 and 7,994.32 is: 11,032.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,708.71 : 20,298 = 7,994.32 : x
  2. Step 2: Convert to fraction form
    14,708.71/20,298 = 7,994.32/x
  3. Step 3: Cross multiply
    14,708.71x = 20,298 × 7,994.32
  4. Step 4: Simplify right side
    14,708.71x = 162,268,707.36
  5. Step 5: Solve for x
    x = 162,268,707.36/14,708.71
  6. Step 6: Final answer
    x = 11,032.15

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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.