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Finding the Fourth Proportional to 504,983, 696,891.12 and 278,643.08

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Solution

The fourth proportional to 504,983, 696,891.12 and 278,643.08 is: 384,535.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,983 : 696,891.12 = 278,643.08 : x
  2. Step 2: Convert to fraction form
    504,983/696,891.12 = 278,643.08/x
  3. Step 3: Cross multiply
    504,983x = 696,891.12 × 278,643.08
  4. Step 4: Simplify right side
    504,983x = 194,183,888,101.45
  5. Step 5: Solve for x
    x = 194,183,888,101.45/504,983
  6. Step 6: Final answer
    x = 384,535.50

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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.