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Finding the Fourth Proportional to 79,196.40, 118,575.90 and 61,700.40

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Solution

The fourth proportional to 79,196.40, 118,575.90 and 61,700.40 is: 92,380.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,196.40 : 118,575.90 = 61,700.40 : x
  2. Step 2: Convert to fraction form
    79,196.40/118,575.90 = 61,700.40/x
  3. Step 3: Cross multiply
    79,196.40x = 118,575.90 × 61,700.40
  4. Step 4: Simplify right side
    79,196.40x = 7,316,180,460.36
  5. Step 5: Solve for x
    x = 7,316,180,460.36/79,196.40
  6. Step 6: Final answer
    x = 92,380.22

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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.