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Finding the Fourth Proportional to 191,910.60, 288,009.90 and 98,368.20

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Solution

The fourth proportional to 191,910.60, 288,009.90 and 98,368.20 is: 147,626.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,910.60 : 288,009.90 = 98,368.20 : x
  2. Step 2: Convert to fraction form
    191,910.60/288,009.90 = 98,368.20/x
  3. Step 3: Cross multiply
    191,910.60x = 288,009.90 × 98,368.20
  4. Step 4: Simplify right side
    191,910.60x = 28,331,015,445.18
  5. Step 5: Solve for x
    x = 28,331,015,445.18/191,910.60
  6. Step 6: Final answer
    x = 147,626.11

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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.