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Finding the Fourth Proportional to 505,156.01, 697,111.87 and 278,801.51

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Solution

The fourth proportional to 505,156.01, 697,111.87 and 278,801.51 is: 384,744.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,156.01 : 697,111.87 = 278,801.51 : x
  2. Step 2: Convert to fraction form
    505,156.01/697,111.87 = 278,801.51/x
  3. Step 3: Cross multiply
    505,156.01x = 697,111.87 × 278,801.51
  4. Step 4: Simplify right side
    505,156.01x = 194,355,840,600.92
  5. Step 5: Solve for x
    x = 194,355,840,600.92/505,156.01
  6. Step 6: Final answer
    x = 384,744.19

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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.