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Finding the Fourth Proportional to 191,708.80, 287,594.88 and 86,525.44

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Solution

The fourth proportional to 191,708.80, 287,594.88 and 86,525.44 is: 129,802.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,708.80 : 287,594.88 = 86,525.44 : x
  2. Step 2: Convert to fraction form
    191,708.80/287,594.88 = 86,525.44/x
  3. Step 3: Cross multiply
    191,708.80x = 287,594.88 × 86,525.44
  4. Step 4: Simplify right side
    191,708.80x = 24,884,273,533.75
  5. Step 5: Solve for x
    x = 24,884,273,533.75/191,708.80
  6. Step 6: Final answer
    x = 129,802.46

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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.