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Finding the Fourth Proportional to 419,496.77, 578,886.84 and 245,083.15

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Solution

The fourth proportional to 419,496.77, 578,886.84 and 245,083.15 is: 338,203.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,496.77 : 578,886.84 = 245,083.15 : x
  2. Step 2: Convert to fraction form
    419,496.77/578,886.84 = 245,083.15/x
  3. Step 3: Cross multiply
    419,496.77x = 578,886.84 × 245,083.15
  4. Step 4: Simplify right side
    419,496.77x = 141,875,408,793.53
  5. Step 5: Solve for x
    x = 141,875,408,793.53/419,496.77
  6. Step 6: Final answer
    x = 338,203.82

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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.