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Finding the Fourth Proportional to 447,777.40, 617,931.84 and 243,825.16

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Solution

The fourth proportional to 447,777.40, 617,931.84 and 243,825.16 is: 336,478.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,777.40 : 617,931.84 = 243,825.16 : x
  2. Step 2: Convert to fraction form
    447,777.40/617,931.84 = 243,825.16/x
  3. Step 3: Cross multiply
    447,777.40x = 617,931.84 × 243,825.16
  4. Step 4: Simplify right side
    447,777.40x = 150,667,329,757.09
  5. Step 5: Solve for x
    x = 150,667,329,757.09/447,777.40
  6. Step 6: Final answer
    x = 336,478.19

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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.