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Finding the Fourth Proportional to 16,875.70, 25,313.55 and 15,723.70

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Solution

The fourth proportional to 16,875.70, 25,313.55 and 15,723.70 is: 23,585.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,875.70 : 25,313.55 = 15,723.70 : x
  2. Step 2: Convert to fraction form
    16,875.70/25,313.55 = 15,723.70/x
  3. Step 3: Cross multiply
    16,875.70x = 25,313.55 × 15,723.70
  4. Step 4: Simplify right side
    16,875.70x = 398,022,666.14
  5. Step 5: Solve for x
    x = 398,022,666.14/16,875.70
  6. Step 6: Final answer
    x = 23,585.55

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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.