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Finding the Fourth Proportional to 14,878.98, 20,538.05 and 10,412.06

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Solution

The fourth proportional to 14,878.98, 20,538.05 and 10,412.06 is: 14,372.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,878.98 : 20,538.05 = 10,412.06 : x
  2. Step 2: Convert to fraction form
    14,878.98/20,538.05 = 10,412.06/x
  3. Step 3: Cross multiply
    14,878.98x = 20,538.05 × 10,412.06
  4. Step 4: Simplify right side
    14,878.98x = 213,843,254.13
  5. Step 5: Solve for x
    x = 213,843,254.13/14,878.98
  6. Step 6: Final answer
    x = 14,372.17

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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.