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Finding the Fourth Proportional to 191,820.80, 287,731.20 and 51,593.60

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Solution

The fourth proportional to 191,820.80, 287,731.20 and 51,593.60 is: 77,390.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,820.80 : 287,731.20 = 51,593.60 : x
  2. Step 2: Convert to fraction form
    191,820.80/287,731.20 = 51,593.60/x
  3. Step 3: Cross multiply
    191,820.80x = 287,731.20 × 51,593.60
  4. Step 4: Simplify right side
    191,820.80x = 14,845,088,440.32
  5. Step 5: Solve for x
    x = 14,845,088,440.32/191,820.80
  6. Step 6: Final answer
    x = 77,390.40

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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.