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Finding the Fourth Proportional to 163,571.55, 225,688.41 and 99,886.11

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Solution

The fourth proportional to 163,571.55, 225,688.41 and 99,886.11 is: 137,818.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,571.55 : 225,688.41 = 99,886.11 : x
  2. Step 2: Convert to fraction form
    163,571.55/225,688.41 = 99,886.11/x
  3. Step 3: Cross multiply
    163,571.55x = 225,688.41 × 99,886.11
  4. Step 4: Simplify right side
    163,571.55x = 22,543,137,346.99
  5. Step 5: Solve for x
    x = 22,543,137,346.99/163,571.55
  6. Step 6: Final answer
    x = 137,818.20

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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.