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Finding the Fourth Proportional to 191,431.60, 287,208.60 and 58,337.20

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Solution

The fourth proportional to 191,431.60, 287,208.60 and 58,337.20 is: 87,524.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,431.60 : 287,208.60 = 58,337.20 : x
  2. Step 2: Convert to fraction form
    191,431.60/287,208.60 = 58,337.20/x
  3. Step 3: Cross multiply
    191,431.60x = 287,208.60 × 58,337.20
  4. Step 4: Simplify right side
    191,431.60x = 16,754,945,539.92
  5. Step 5: Solve for x
    x = 16,754,945,539.92/191,431.60
  6. Step 6: Final answer
    x = 87,524.45

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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.