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Finding the Fourth Proportional to 368,353.72, 508,373.14 and 207,215.56

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Solution

The fourth proportional to 368,353.72, 508,373.14 and 207,215.56 is: 285,982.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,353.72 : 508,373.14 = 207,215.56 : x
  2. Step 2: Convert to fraction form
    368,353.72/508,373.14 = 207,215.56/x
  3. Step 3: Cross multiply
    368,353.72x = 508,373.14 × 207,215.56
  4. Step 4: Simplify right side
    368,353.72x = 105,342,824,894.06
  5. Step 5: Solve for x
    x = 105,342,824,894.06/368,353.72
  6. Step 6: Final answer
    x = 285,982.79

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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.