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Finding the Fourth Proportional to 191,940.84, 287,911.26 and 98,386.92

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Solution

The fourth proportional to 191,940.84, 287,911.26 and 98,386.92 is: 147,580.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,940.84 : 287,911.26 = 98,386.92 : x
  2. Step 2: Convert to fraction form
    191,940.84/287,911.26 = 98,386.92/x
  3. Step 3: Cross multiply
    191,940.84x = 287,911.26 × 98,386.92
  4. Step 4: Simplify right side
    191,940.84x = 28,326,702,104.72
  5. Step 5: Solve for x
    x = 28,326,702,104.72/191,940.84
  6. Step 6: Final answer
    x = 147,580.38

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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.