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Finding the Fourth Proportional to 369,071.80, 553,607.70 and 322,415.80

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Solution

The fourth proportional to 369,071.80, 553,607.70 and 322,415.80 is: 483,623.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,071.80 : 553,607.70 = 322,415.80 : x
  2. Step 2: Convert to fraction form
    369,071.80/553,607.70 = 322,415.80/x
  3. Step 3: Cross multiply
    369,071.80x = 553,607.70 × 322,415.80
  4. Step 4: Simplify right side
    369,071.80x = 178,491,869,481.66
  5. Step 5: Solve for x
    x = 178,491,869,481.66/369,071.80
  6. Step 6: Final answer
    x = 483,623.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.