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Finding the Fourth Proportional to 817,588.80, 1,145,805.30 and 817,588.80

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Solution

The fourth proportional to 817,588.80, 1,145,805.30 and 817,588.80 is: 1,145,805.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,588.80 : 1,145,805.30 = 817,588.80 : x
  2. Step 2: Convert to fraction form
    817,588.80/1,145,805.30 = 817,588.80/x
  3. Step 3: Cross multiply
    817,588.80x = 1,145,805.30 × 817,588.80
  4. Step 4: Simplify right side
    817,588.80x = 936,797,580,260.64
  5. Step 5: Solve for x
    x = 936,797,580,260.64/817,588.80
  6. Step 6: Final answer
    x = 1,145,805.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.