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Finding the Fourth Proportional to 14,307.48, 19,744.20 and 8,718.48

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Solution

The fourth proportional to 14,307.48, 19,744.20 and 8,718.48 is: 12,031.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,307.48 : 19,744.20 = 8,718.48 : x
  2. Step 2: Convert to fraction form
    14,307.48/19,744.20 = 8,718.48/x
  3. Step 3: Cross multiply
    14,307.48x = 19,744.20 × 8,718.48
  4. Step 4: Simplify right side
    14,307.48x = 172,139,412.82
  5. Step 5: Solve for x
    x = 172,139,412.82/14,307.48
  6. Step 6: Final answer
    x = 12,031.43

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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.