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Finding the Fourth Proportional to 618,853.68, 854,017.08 and 377,137.20

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Solution

The fourth proportional to 618,853.68, 854,017.08 and 377,137.20 is: 520,448.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,853.68 : 854,017.08 = 377,137.20 : x
  2. Step 2: Convert to fraction form
    618,853.68/854,017.08 = 377,137.20/x
  3. Step 3: Cross multiply
    618,853.68x = 854,017.08 × 377,137.20
  4. Step 4: Simplify right side
    618,853.68x = 322,081,610,303.38
  5. Step 5: Solve for x
    x = 322,081,610,303.38/618,853.68
  6. Step 6: Final answer
    x = 520,448.73

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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.