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Finding the Fourth Proportional to 98,688.60, 148,032.90 and 36,383.40

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Solution

The fourth proportional to 98,688.60, 148,032.90 and 36,383.40 is: 54,575.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,688.60 : 148,032.90 = 36,383.40 : x
  2. Step 2: Convert to fraction form
    98,688.60/148,032.90 = 36,383.40/x
  3. Step 3: Cross multiply
    98,688.60x = 148,032.90 × 36,383.40
  4. Step 4: Simplify right side
    98,688.60x = 5,385,940,213.86
  5. Step 5: Solve for x
    x = 5,385,940,213.86/98,688.60
  6. Step 6: Final answer
    x = 54,575.10

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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.