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Finding the Fourth Proportional to 17,623.80, 26,435.70 and 8,875.80

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Solution

The fourth proportional to 17,623.80, 26,435.70 and 8,875.80 is: 13,313.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,623.80 : 26,435.70 = 8,875.80 : x
  2. Step 2: Convert to fraction form
    17,623.80/26,435.70 = 8,875.80/x
  3. Step 3: Cross multiply
    17,623.80x = 26,435.70 × 8,875.80
  4. Step 4: Simplify right side
    17,623.80x = 234,637,986.06
  5. Step 5: Solve for x
    x = 234,637,986.06/17,623.80
  6. Step 6: Final answer
    x = 13,313.70

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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.