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Finding the Fourth Proportional to 528,082.15, 792,900.83 and 409,886.95

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Solution

The fourth proportional to 528,082.15, 792,900.83 and 409,886.95 is: 615,433.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,082.15 : 792,900.83 = 409,886.95 : x
  2. Step 2: Convert to fraction form
    528,082.15/792,900.83 = 409,886.95/x
  3. Step 3: Cross multiply
    528,082.15x = 792,900.83 × 409,886.95
  4. Step 4: Simplify right side
    528,082.15x = 324,999,700,811.73
  5. Step 5: Solve for x
    x = 324,999,700,811.73/528,082.15
  6. Step 6: Final answer
    x = 615,433.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.