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Finding the Fourth Proportional to 191,418.32, 287,172.92 and 60,090.32

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Solution

The fourth proportional to 191,418.32, 287,172.92 and 60,090.32 is: 90,149.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,418.32 : 287,172.92 = 60,090.32 : x
  2. Step 2: Convert to fraction form
    191,418.32/287,172.92 = 60,090.32/x
  3. Step 3: Cross multiply
    191,418.32x = 287,172.92 × 60,090.32
  4. Step 4: Simplify right side
    191,418.32x = 17,256,312,658.13
  5. Step 5: Solve for x
    x = 17,256,312,658.13/191,418.32
  6. Step 6: Final answer
    x = 90,149.74

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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.