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Finding the Fourth Proportional to 191,762.78, 287,641.74 and 58,647.38

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Solution

The fourth proportional to 191,762.78, 287,641.74 and 58,647.38 is: 87,970.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,762.78 : 287,641.74 = 58,647.38 : x
  2. Step 2: Convert to fraction form
    191,762.78/287,641.74 = 58,647.38/x
  3. Step 3: Cross multiply
    191,762.78x = 287,641.74 × 58,647.38
  4. Step 4: Simplify right side
    191,762.78x = 16,869,434,429.64
  5. Step 5: Solve for x
    x = 16,869,434,429.64/191,762.78
  6. Step 6: Final answer
    x = 87,970.33

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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.