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Finding the Fourth Proportional to 405,883.78, 608,103.39 and 346,113.10

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Solution

The fourth proportional to 405,883.78, 608,103.39 and 346,113.10 is: 518,553.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,883.78 : 608,103.39 = 346,113.10 : x
  2. Step 2: Convert to fraction form
    405,883.78/608,103.39 = 346,113.10/x
  3. Step 3: Cross multiply
    405,883.78x = 608,103.39 × 346,113.10
  4. Step 4: Simplify right side
    405,883.78x = 210,472,549,433.41
  5. Step 5: Solve for x
    x = 210,472,549,433.41/405,883.78
  6. Step 6: Final answer
    x = 518,553.73

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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.