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Finding the Fourth Proportional to 191,946.60, 288,063.90 and 98,404.20

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Solution

The fourth proportional to 191,946.60, 288,063.90 and 98,404.20 is: 147,680.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,946.60 : 288,063.90 = 98,404.20 : x
  2. Step 2: Convert to fraction form
    191,946.60/288,063.90 = 98,404.20/x
  3. Step 3: Cross multiply
    191,946.60x = 288,063.90 × 98,404.20
  4. Step 4: Simplify right side
    191,946.60x = 28,346,697,628.38
  5. Step 5: Solve for x
    x = 28,346,697,628.38/191,946.60
  6. Step 6: Final answer
    x = 147,680.12

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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.