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Finding the Fourth Proportional to 405,593.61, 608,404.56 and 139,352.19

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Solution

The fourth proportional to 405,593.61, 608,404.56 and 139,352.19 is: 209,033.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,593.61 : 608,404.56 = 139,352.19 : x
  2. Step 2: Convert to fraction form
    405,593.61/608,404.56 = 139,352.19/x
  3. Step 3: Cross multiply
    405,593.61x = 608,404.56 × 139,352.19
  4. Step 4: Simplify right side
    405,593.61x = 84,782,507,841.99
  5. Step 5: Solve for x
    x = 84,782,507,841.99/405,593.61
  6. Step 6: Final answer
    x = 209,033.14

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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.