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Finding the Fourth Proportional to 196,688.20, 295,153.80 and 78,347.20

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Solution

The fourth proportional to 196,688.20, 295,153.80 and 78,347.20 is: 117,569.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,688.20 : 295,153.80 = 78,347.20 : x
  2. Step 2: Convert to fraction form
    196,688.20/295,153.80 = 78,347.20/x
  3. Step 3: Cross multiply
    196,688.20x = 295,153.80 × 78,347.20
  4. Step 4: Simplify right side
    196,688.20x = 23,124,473,799.36
  5. Step 5: Solve for x
    x = 23,124,473,799.36/196,688.20
  6. Step 6: Final answer
    x = 117,569.20

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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.