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Finding the Fourth Proportional to 10,666.68, 15,921.01 and 10,010.04

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Solution

The fourth proportional to 10,666.68, 15,921.01 and 10,010.04 is: 14,940.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,666.68 : 15,921.01 = 10,010.04 : x
  2. Step 2: Convert to fraction form
    10,666.68/15,921.01 = 10,010.04/x
  3. Step 3: Cross multiply
    10,666.68x = 15,921.01 × 10,010.04
  4. Step 4: Simplify right side
    10,666.68x = 159,369,946.94
  5. Step 5: Solve for x
    x = 159,369,946.94/10,666.68
  6. Step 6: Final answer
    x = 14,940.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.