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Finding the Fourth Proportional to 97,607.60, 146,411.40 and 80,986.40

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Solution

The fourth proportional to 97,607.60, 146,411.40 and 80,986.40 is: 121,479.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,607.60 : 146,411.40 = 80,986.40 : x
  2. Step 2: Convert to fraction form
    97,607.60/146,411.40 = 80,986.40/x
  3. Step 3: Cross multiply
    97,607.60x = 146,411.40 × 80,986.40
  4. Step 4: Simplify right side
    97,607.60x = 11,857,332,204.96
  5. Step 5: Solve for x
    x = 11,857,332,204.96/97,607.60
  6. Step 6: Final answer
    x = 121,479.60

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1.5x scale

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.