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Finding the Fourth Proportional to 697,959.11, 963,162.59 and 387,860.64

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Solution

The fourth proportional to 697,959.11, 963,162.59 and 387,860.64 is: 535,236.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,959.11 : 963,162.59 = 387,860.64 : x
  2. Step 2: Convert to fraction form
    697,959.11/963,162.59 = 387,860.64/x
  3. Step 3: Cross multiply
    697,959.11x = 963,162.59 × 387,860.64
  4. Step 4: Simplify right side
    697,959.11x = 373,572,856,642.15
  5. Step 5: Solve for x
    x = 373,572,856,642.15/697,959.11
  6. Step 6: Final answer
    x = 535,236.02

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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.