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Finding the Fourth Proportional to 15,472.65, 21,361.01 and 10,699.59

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Solution

The fourth proportional to 15,472.65, 21,361.01 and 10,699.59 is: 14,771.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,472.65 : 21,361.01 = 10,699.59 : x
  2. Step 2: Convert to fraction form
    15,472.65/21,361.01 = 10,699.59/x
  3. Step 3: Cross multiply
    15,472.65x = 21,361.01 × 10,699.59
  4. Step 4: Simplify right side
    15,472.65x = 228,553,995.49
  5. Step 5: Solve for x
    x = 228,553,995.49/15,472.65
  6. Step 6: Final answer
    x = 14,771.48

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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.