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Finding the Fourth Proportional to 79,077.83, 118,485.51 and 55,655.06

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Solution

The fourth proportional to 79,077.83, 118,485.51 and 55,655.06 is: 83,390.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,077.83 : 118,485.51 = 55,655.06 : x
  2. Step 2: Convert to fraction form
    79,077.83/118,485.51 = 55,655.06/x
  3. Step 3: Cross multiply
    79,077.83x = 118,485.51 × 55,655.06
  4. Step 4: Simplify right side
    79,077.83x = 6,594,317,680.11
  5. Step 5: Solve for x
    x = 6,594,317,680.11/79,077.83
  6. Step 6: Final answer
    x = 83,390.23

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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.