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Finding the Fourth Proportional to 279,123.77, 385,026.81 and 175,593.32

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Solution

The fourth proportional to 279,123.77, 385,026.81 and 175,593.32 is: 242,215.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,123.77 : 385,026.81 = 175,593.32 : x
  2. Step 2: Convert to fraction form
    279,123.77/385,026.81 = 175,593.32/x
  3. Step 3: Cross multiply
    279,123.77x = 385,026.81 × 175,593.32
  4. Step 4: Simplify right side
    279,123.77x = 67,608,133,931.78
  5. Step 5: Solve for x
    x = 67,608,133,931.78/279,123.77
  6. Step 6: Final answer
    x = 242,215.61

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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.