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Finding the Fourth Proportional to 661,610.23, 912,685.49 and 432,301.57

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Solution

The fourth proportional to 661,610.23, 912,685.49 and 432,301.57 is: 596,356.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,610.23 : 912,685.49 = 432,301.57 : x
  2. Step 2: Convert to fraction form
    661,610.23/912,685.49 = 432,301.57/x
  3. Step 3: Cross multiply
    661,610.23x = 912,685.49 × 432,301.57
  4. Step 4: Simplify right side
    661,610.23x = 394,555,370,243.22
  5. Step 5: Solve for x
    x = 394,555,370,243.22/661,610.23
  6. Step 6: Final answer
    x = 596,356.21

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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.