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Finding the Fourth Proportional to 299,358.84, 412,718.22 and 248,178.36

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Solution

The fourth proportional to 299,358.84, 412,718.22 and 248,178.36 is: 342,157.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,358.84 : 412,718.22 = 248,178.36 : x
  2. Step 2: Convert to fraction form
    299,358.84/412,718.22 = 248,178.36/x
  3. Step 3: Cross multiply
    299,358.84x = 412,718.22 × 248,178.36
  4. Step 4: Simplify right side
    299,358.84x = 102,427,730,981.72
  5. Step 5: Solve for x
    x = 102,427,730,981.72/299,358.84
  6. Step 6: Final answer
    x = 342,157.03

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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.