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Finding the Fourth Proportional to 505,803.38, 698,000.49 and 276,355.76

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Solution

The fourth proportional to 505,803.38, 698,000.49 and 276,355.76 is: 381,366.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,803.38 : 698,000.49 = 276,355.76 : x
  2. Step 2: Convert to fraction form
    505,803.38/698,000.49 = 276,355.76/x
  3. Step 3: Cross multiply
    505,803.38x = 698,000.49 × 276,355.76
  4. Step 4: Simplify right side
    505,803.38x = 192,896,455,894.32
  5. Step 5: Solve for x
    x = 192,896,455,894.32/505,803.38
  6. Step 6: Final answer
    x = 381,366.48

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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.