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Finding the Fourth Proportional to 414,607.78, 620,665.78 and 371,298.90

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Solution

The fourth proportional to 414,607.78, 620,665.78 and 371,298.90 is: 555,832.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,607.78 : 620,665.78 = 371,298.90 : x
  2. Step 2: Convert to fraction form
    414,607.78/620,665.78 = 371,298.90/x
  3. Step 3: Cross multiply
    414,607.78x = 620,665.78 × 371,298.90
  4. Step 4: Simplify right side
    414,607.78x = 230,452,521,381.64
  5. Step 5: Solve for x
    x = 230,452,521,381.64/414,607.78
  6. Step 6: Final answer
    x = 555,832.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.