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Finding the Fourth Proportional to 505,865.30, 698,085.68 and 276,417.54

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Solution

The fourth proportional to 505,865.30, 698,085.68 and 276,417.54 is: 381,451.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,865.30 : 698,085.68 = 276,417.54 : x
  2. Step 2: Convert to fraction form
    505,865.30/698,085.68 = 276,417.54/x
  3. Step 3: Cross multiply
    505,865.30x = 698,085.68 × 276,417.54
  4. Step 4: Simplify right side
    505,865.30x = 192,963,124,992.74
  5. Step 5: Solve for x
    x = 192,963,124,992.74/505,865.30
  6. Step 6: Final answer
    x = 381,451.60

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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.