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Finding the Fourth Proportional to 14,975.71, 20,666.73 and 9,006.25

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Solution

The fourth proportional to 14,975.71, 20,666.73 and 9,006.25 is: 12,428.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,975.71 : 20,666.73 = 9,006.25 : x
  2. Step 2: Convert to fraction form
    14,975.71/20,666.73 = 9,006.25/x
  3. Step 3: Cross multiply
    14,975.71x = 20,666.73 × 9,006.25
  4. Step 4: Simplify right side
    14,975.71x = 186,129,737.06
  5. Step 5: Solve for x
    x = 186,129,737.06/14,975.71
  6. Step 6: Final answer
    x = 12,428.78

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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.