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Finding the Fourth Proportional to 94,652.04, 141,978.12 and 53,128.20

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Solution

The fourth proportional to 94,652.04, 141,978.12 and 53,128.20 is: 79,692.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,652.04 : 141,978.12 = 53,128.20 : x
  2. Step 2: Convert to fraction form
    94,652.04/141,978.12 = 53,128.20/x
  3. Step 3: Cross multiply
    94,652.04x = 141,978.12 × 53,128.20
  4. Step 4: Simplify right side
    94,652.04x = 7,543,041,954.98
  5. Step 5: Solve for x
    x = 7,543,041,954.98/94,652.04
  6. Step 6: Final answer
    x = 79,692.33

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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.