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Finding the Fourth Proportional to 189,351.33, 283,756.32 and 139,036.65

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Solution

The fourth proportional to 189,351.33, 283,756.32 and 139,036.65 is: 208,356.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,351.33 : 283,756.32 = 139,036.65 : x
  2. Step 2: Convert to fraction form
    189,351.33/283,756.32 = 139,036.65/x
  3. Step 3: Cross multiply
    189,351.33x = 283,756.32 × 139,036.65
  4. Step 4: Simplify right side
    189,351.33x = 39,452,528,149.13
  5. Step 5: Solve for x
    x = 39,452,528,149.13/189,351.33
  6. Step 6: Final answer
    x = 208,356.22

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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.