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Finding the Fourth Proportional to 212,803.98, 319,205.25 and 63,045.42

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Solution

The fourth proportional to 212,803.98, 319,205.25 and 63,045.42 is: 94,567.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,803.98 : 319,205.25 = 63,045.42 : x
  2. Step 2: Convert to fraction form
    212,803.98/319,205.25 = 63,045.42/x
  3. Step 3: Cross multiply
    212,803.98x = 319,205.25 × 63,045.42
  4. Step 4: Simplify right side
    212,803.98x = 20,124,429,052.46
  5. Step 5: Solve for x
    x = 20,124,429,052.46/212,803.98
  6. Step 6: Final answer
    x = 94,567.92

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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.