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Finding the Fourth Proportional to 216,756.51, 299,116.98 and 121,261.11

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Solution

The fourth proportional to 216,756.51, 299,116.98 and 121,261.11 is: 167,336.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,756.51 : 299,116.98 = 121,261.11 : x
  2. Step 2: Convert to fraction form
    216,756.51/299,116.98 = 121,261.11/x
  3. Step 3: Cross multiply
    216,756.51x = 299,116.98 × 121,261.11
  4. Step 4: Simplify right side
    216,756.51x = 36,271,257,014.65
  5. Step 5: Solve for x
    x = 36,271,257,014.65/216,756.51
  6. Step 6: Final answer
    x = 167,336.41

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