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Finding the Fourth Proportional to 504,431.66, 696,105.40 and 278,077.16

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Solution

The fourth proportional to 504,431.66, 696,105.40 and 278,077.16 is: 383,740.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,431.66 : 696,105.40 = 278,077.16 : x
  2. Step 2: Convert to fraction form
    504,431.66/696,105.40 = 278,077.16/x
  3. Step 3: Cross multiply
    504,431.66x = 696,105.40 × 278,077.16
  4. Step 4: Simplify right side
    504,431.66x = 193,571,012,692.66
  5. Step 5: Solve for x
    x = 193,571,012,692.66/504,431.66
  6. Step 6: Final answer
    x = 383,740.81

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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.