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Finding the Fourth Proportional to 505,762.68, 698,000.78 and 276,354.84

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Solution

The fourth proportional to 505,762.68, 698,000.78 and 276,354.84 is: 381,396.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,762.68 : 698,000.78 = 276,354.84 : x
  2. Step 2: Convert to fraction form
    505,762.68/698,000.78 = 276,354.84/x
  3. Step 3: Cross multiply
    505,762.68x = 698,000.78 × 276,354.84
  4. Step 4: Simplify right side
    505,762.68x = 192,895,893,876.78
  5. Step 5: Solve for x
    x = 192,895,893,876.78/505,762.68
  6. Step 6: Final answer
    x = 381,396.06

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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.