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Finding the Fourth Proportional to 64,909.20, 97,363.80 and 61,701.60

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Solution

The fourth proportional to 64,909.20, 97,363.80 and 61,701.60 is: 92,552.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,909.20 : 97,363.80 = 61,701.60 : x
  2. Step 2: Convert to fraction form
    64,909.20/97,363.80 = 61,701.60/x
  3. Step 3: Cross multiply
    64,909.20x = 97,363.80 × 61,701.60
  4. Step 4: Simplify right side
    64,909.20x = 6,007,502,242.08
  5. Step 5: Solve for x
    x = 6,007,502,242.08/64,909.20
  6. Step 6: Final answer
    x = 92,552.40

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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.