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Finding the Fourth Proportional to 714,410.79, 985,872.81 and 404,307.63

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Solution

The fourth proportional to 714,410.79, 985,872.81 and 404,307.63 is: 557,936.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,410.79 : 985,872.81 = 404,307.63 : x
  2. Step 2: Convert to fraction form
    714,410.79/985,872.81 = 404,307.63/x
  3. Step 3: Cross multiply
    714,410.79x = 985,872.81 × 404,307.63
  4. Step 4: Simplify right side
    714,410.79x = 398,595,895,193.14
  5. Step 5: Solve for x
    x = 398,595,895,193.14/714,410.79
  6. Step 6: Final answer
    x = 557,936.56

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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.