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Finding the Fourth Proportional to 92,901.20, 139,270.80 and 63,222.80

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Solution

The fourth proportional to 92,901.20, 139,270.80 and 63,222.80 is: 94,779.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,901.20 : 139,270.80 = 63,222.80 : x
  2. Step 2: Convert to fraction form
    92,901.20/139,270.80 = 63,222.80/x
  3. Step 3: Cross multiply
    92,901.20x = 139,270.80 × 63,222.80
  4. Step 4: Simplify right side
    92,901.20x = 8,805,089,934.24
  5. Step 5: Solve for x
    x = 8,805,089,934.24/92,901.20
  6. Step 6: Final answer
    x = 94,779.08

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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.