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Finding the Fourth Proportional to 611,574.02, 844,000.16 and 339,643.11

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Solution

The fourth proportional to 611,574.02, 844,000.16 and 339,643.11 is: 468,723.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,574.02 : 844,000.16 = 339,643.11 : x
  2. Step 2: Convert to fraction form
    611,574.02/844,000.16 = 339,643.11/x
  3. Step 3: Cross multiply
    611,574.02x = 844,000.16 × 339,643.11
  4. Step 4: Simplify right side
    611,574.02x = 286,658,839,182.90
  5. Step 5: Solve for x
    x = 286,658,839,182.90/611,574.02
  6. Step 6: Final answer
    x = 468,723.05

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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.