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Finding the Fourth Proportional to 12,172.50, 16,798.14 and 7,459.92

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Solution

The fourth proportional to 12,172.50, 16,798.14 and 7,459.92 is: 10,294.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,172.50 : 16,798.14 = 7,459.92 : x
  2. Step 2: Convert to fraction form
    12,172.50/16,798.14 = 7,459.92/x
  3. Step 3: Cross multiply
    12,172.50x = 16,798.14 × 7,459.92
  4. Step 4: Simplify right side
    12,172.50x = 125,312,780.55
  5. Step 5: Solve for x
    x = 125,312,780.55/12,172.50
  6. Step 6: Final answer
    x = 10,294.74

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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.