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Finding the Fourth Proportional to 34,196.80, 51,279.72 and 14,465.20

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Solution

The fourth proportional to 34,196.80, 51,279.72 and 14,465.20 is: 21,691.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,196.80 : 51,279.72 = 14,465.20 : x
  2. Step 2: Convert to fraction form
    34,196.80/51,279.72 = 14,465.20/x
  3. Step 3: Cross multiply
    34,196.80x = 51,279.72 × 14,465.20
  4. Step 4: Simplify right side
    34,196.80x = 741,771,405.74
  5. Step 5: Solve for x
    x = 741,771,405.74/34,196.80
  6. Step 6: Final answer
    x = 21,691.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.