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Finding the Fourth Proportional to 621,310.66, 930,565.83 and 435,153.22

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Solution

The fourth proportional to 621,310.66, 930,565.83 and 435,153.22 is: 651,749.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,310.66 : 930,565.83 = 435,153.22 : x
  2. Step 2: Convert to fraction form
    621,310.66/930,565.83 = 435,153.22/x
  3. Step 3: Cross multiply
    621,310.66x = 930,565.83 × 435,153.22
  4. Step 4: Simplify right side
    621,310.66x = 404,938,717,346.47
  5. Step 5: Solve for x
    x = 404,938,717,346.47/621,310.66
  6. Step 6: Final answer
    x = 651,749.19

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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.