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Finding the Fourth Proportional to 12,795.40, 19,191.66 and 9,513.40

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Solution

The fourth proportional to 12,795.40, 19,191.66 and 9,513.40 is: 14,269.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,795.40 : 19,191.66 = 9,513.40 : x
  2. Step 2: Convert to fraction form
    12,795.40/19,191.66 = 9,513.40/x
  3. Step 3: Cross multiply
    12,795.40x = 19,191.66 × 9,513.40
  4. Step 4: Simplify right side
    12,795.40x = 182,577,938.24
  5. Step 5: Solve for x
    x = 182,577,938.24/12,795.40
  6. Step 6: Final answer
    x = 14,269.03

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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.