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Finding the Fourth Proportional to 661,984.62, 913,559.22 and 375,516.78

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Solution

The fourth proportional to 661,984.62, 913,559.22 and 375,516.78 is: 518,224.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,984.62 : 913,559.22 = 375,516.78 : x
  2. Step 2: Convert to fraction form
    661,984.62/913,559.22 = 375,516.78/x
  3. Step 3: Cross multiply
    661,984.62x = 913,559.22 × 375,516.78
  4. Step 4: Simplify right side
    661,984.62x = 343,056,816,633.71
  5. Step 5: Solve for x
    x = 343,056,816,633.71/661,984.62
  6. Step 6: Final answer
    x = 518,224.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.