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Finding the Fourth Proportional to 691,178.24, 953,710.43 and 385,187.58

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Solution

The fourth proportional to 691,178.24, 953,710.43 and 385,187.58 is: 531,494.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,178.24 : 953,710.43 = 385,187.58 : x
  2. Step 2: Convert to fraction form
    691,178.24/953,710.43 = 385,187.58/x
  3. Step 3: Cross multiply
    691,178.24x = 953,710.43 × 385,187.58
  4. Step 4: Simplify right side
    691,178.24x = 367,357,412,552.46
  5. Step 5: Solve for x
    x = 367,357,412,552.46/691,178.24
  6. Step 6: Final answer
    x = 531,494.47

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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.