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Finding the Fourth Proportional to 438,453.36, 605,037.06 and 247,440.78

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Solution

The fourth proportional to 438,453.36, 605,037.06 and 247,440.78 is: 341,452.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,453.36 : 605,037.06 = 247,440.78 : x
  2. Step 2: Convert to fraction form
    438,453.36/605,037.06 = 247,440.78/x
  3. Step 3: Cross multiply
    438,453.36x = 605,037.06 × 247,440.78
  4. Step 4: Simplify right side
    438,453.36x = 149,710,842,055.31
  5. Step 5: Solve for x
    x = 149,710,842,055.31/438,453.36
  6. Step 6: Final answer
    x = 341,452.15

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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.