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Finding the Fourth Proportional to 557,358.11, 769,389.05 and 376,315.01

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Solution

The fourth proportional to 557,358.11, 769,389.05 and 376,315.01 is: 519,473.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,358.11 : 769,389.05 = 376,315.01 : x
  2. Step 2: Convert to fraction form
    557,358.11/769,389.05 = 376,315.01/x
  3. Step 3: Cross multiply
    557,358.11x = 769,389.05 × 376,315.01
  4. Step 4: Simplify right side
    557,358.11x = 289,532,645,138.48
  5. Step 5: Solve for x
    x = 289,532,645,138.48/557,358.11
  6. Step 6: Final answer
    x = 519,473.28

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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.