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Finding the Fourth Proportional to 505,253.82, 697,255.11 and 278,894.46

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Solution

The fourth proportional to 505,253.82, 697,255.11 and 278,894.46 is: 384,877.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,253.82 : 697,255.11 = 278,894.46 : x
  2. Step 2: Convert to fraction form
    505,253.82/697,255.11 = 278,894.46/x
  3. Step 3: Cross multiply
    505,253.82x = 697,255.11 × 278,894.46
  4. Step 4: Simplify right side
    505,253.82x = 194,460,587,385.69
  5. Step 5: Solve for x
    x = 194,460,587,385.69/505,253.82
  6. Step 6: Final answer
    x = 384,877.03

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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.