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Finding the Fourth Proportional to 664,143.79, 916,510.81 and 373,754.24

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Solution

The fourth proportional to 664,143.79, 916,510.81 and 373,754.24 is: 515,776.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,143.79 : 916,510.81 = 373,754.24 : x
  2. Step 2: Convert to fraction form
    664,143.79/916,510.81 = 373,754.24/x
  3. Step 3: Cross multiply
    664,143.79x = 916,510.81 × 373,754.24
  4. Step 4: Simplify right side
    664,143.79x = 342,549,801,243.33
  5. Step 5: Solve for x
    x = 342,549,801,243.33/664,143.79
  6. Step 6: Final answer
    x = 515,776.56

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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.