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Finding the Fourth Proportional to 438,659.94, 605,345.49 and 247,681.38

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Solution

The fourth proportional to 438,659.94, 605,345.49 and 247,681.38 is: 341,797.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,659.94 : 605,345.49 = 247,681.38 : x
  2. Step 2: Convert to fraction form
    438,659.94/605,345.49 = 247,681.38/x
  3. Step 3: Cross multiply
    438,659.94x = 605,345.49 × 247,681.38
  4. Step 4: Simplify right side
    438,659.94x = 149,932,806,339.98
  5. Step 5: Solve for x
    x = 149,932,806,339.98/438,659.94
  6. Step 6: Final answer
    x = 341,797.35

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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.