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Finding the Fourth Proportional to 101,360.45, 139,876.43 and 56,039.53

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Solution

The fourth proportional to 101,360.45, 139,876.43 and 56,039.53 is: 77,334.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,360.45 : 139,876.43 = 56,039.53 : x
  2. Step 2: Convert to fraction form
    101,360.45/139,876.43 = 56,039.53/x
  3. Step 3: Cross multiply
    101,360.45x = 139,876.43 × 56,039.53
  4. Step 4: Simplify right side
    101,360.45x = 7,838,609,395.28
  5. Step 5: Solve for x
    x = 7,838,609,395.28/101,360.45
  6. Step 6: Final answer
    x = 77,334.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.