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Finding the Fourth Proportional to 664,381.30, 928,034.30 and 664,381.30

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Solution

The fourth proportional to 664,381.30, 928,034.30 and 664,381.30 is: 928,034.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,381.30 : 928,034.30 = 664,381.30 : x
  2. Step 2: Convert to fraction form
    664,381.30/928,034.30 = 664,381.30/x
  3. Step 3: Cross multiply
    664,381.30x = 928,034.30 × 664,381.30
  4. Step 4: Simplify right side
    664,381.30x = 616,568,634,678.59
  5. Step 5: Solve for x
    x = 616,568,634,678.59/664,381.30
  6. Step 6: Final answer
    x = 928,034.30

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Double scale
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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.