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Finding the Fourth Proportional to 439,436.77, 606,439.07 and 248,438.77

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Solution

The fourth proportional to 439,436.77, 606,439.07 and 248,438.77 is: 342,854.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,436.77 : 606,439.07 = 248,438.77 : x
  2. Step 2: Convert to fraction form
    439,436.77/606,439.07 = 248,438.77/x
  3. Step 3: Cross multiply
    439,436.77x = 606,439.07 × 248,438.77
  4. Step 4: Simplify right side
    439,436.77x = 150,662,974,804.10
  5. Step 5: Solve for x
    x = 150,662,974,804.10/439,436.77
  6. Step 6: Final answer
    x = 342,854.73

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Half scale
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Double scale
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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.