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Finding the Fourth Proportional to 661,806.01, 913,288.19 and 360,001.21

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Solution

The fourth proportional to 661,806.01, 913,288.19 and 360,001.21 is: 496,799.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,806.01 : 913,288.19 = 360,001.21 : x
  2. Step 2: Convert to fraction form
    661,806.01/913,288.19 = 360,001.21/x
  3. Step 3: Cross multiply
    661,806.01x = 913,288.19 × 360,001.21
  4. Step 4: Simplify right side
    661,806.01x = 328,784,851,678.70
  5. Step 5: Solve for x
    x = 328,784,851,678.70/661,806.01
  6. Step 6: Final answer
    x = 496,799.43

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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.