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Finding the Fourth Proportional to 505,470.51, 697,535.96 and 279,111.15

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Solution

The fourth proportional to 505,470.51, 697,535.96 and 279,111.15 is: 385,166.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    505,470.51 : 697,535.96 = 279,111.15 : x
  2. Step 2: Convert to fraction form
    505,470.51/697,535.96 = 279,111.15/x
  3. Step 3: Cross multiply
    505,470.51x = 697,535.96 × 279,111.15
  4. Step 4: Simplify right side
    505,470.51x = 194,690,062,566.40
  5. Step 5: Solve for x
    x = 194,690,062,566.40/505,470.51
  6. Step 6: Final answer
    x = 385,166.02

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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.