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Finding the Fourth Proportional to 18,966.96, 26,148.96 and 13,294.08

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Solution

The fourth proportional to 18,966.96, 26,148.96 and 13,294.08 is: 18,328.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,966.96 : 26,148.96 = 13,294.08 : x
  2. Step 2: Convert to fraction form
    18,966.96/26,148.96 = 13,294.08/x
  3. Step 3: Cross multiply
    18,966.96x = 26,148.96 × 13,294.08
  4. Step 4: Simplify right side
    18,966.96x = 347,626,366.16
  5. Step 5: Solve for x
    x = 347,626,366.16/18,966.96
  6. Step 6: Final answer
    x = 18,328.00

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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.