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Finding the Fourth Proportional to 319,161.61, 478,690.58 and 150,681.61

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Solution

The fourth proportional to 319,161.61, 478,690.58 and 150,681.61 is: 225,997.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,161.61 : 478,690.58 = 150,681.61 : x
  2. Step 2: Convert to fraction form
    319,161.61/478,690.58 = 150,681.61/x
  3. Step 3: Cross multiply
    319,161.61x = 478,690.58 × 150,681.61
  4. Step 4: Simplify right side
    319,161.61x = 72,129,866,532.83
  5. Step 5: Solve for x
    x = 72,129,866,532.83/319,161.61
  6. Step 6: Final answer
    x = 225,997.94

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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.