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Finding the Fourth Proportional to 504,538.80, 696,231.80 and 278,186.16

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Solution

The fourth proportional to 504,538.80, 696,231.80 and 278,186.16 is: 383,879.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,538.80 : 696,231.80 = 278,186.16 : x
  2. Step 2: Convert to fraction form
    504,538.80/696,231.80 = 278,186.16/x
  3. Step 3: Cross multiply
    504,538.80x = 696,231.80 × 278,186.16
  4. Step 4: Simplify right side
    504,538.80x = 193,682,050,911.89
  5. Step 5: Solve for x
    x = 193,682,050,911.89/504,538.80
  6. Step 6: Final answer
    x = 383,879.40

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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.