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Finding the Fourth Proportional to 60,051.78, 90,135.99 and 43,518.06

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Solution

The fourth proportional to 60,051.78, 90,135.99 and 43,518.06 is: 65,319.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,051.78 : 90,135.99 = 43,518.06 : x
  2. Step 2: Convert to fraction form
    60,051.78/90,135.99 = 43,518.06/x
  3. Step 3: Cross multiply
    60,051.78x = 90,135.99 × 43,518.06
  4. Step 4: Simplify right side
    60,051.78x = 3,922,543,420.98
  5. Step 5: Solve for x
    x = 3,922,543,420.98/60,051.78
  6. Step 6: Final answer
    x = 65,319.35

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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.