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Finding the Fourth Proportional to 194,424.60, 291,636.90 and 69,749.40

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Solution

The fourth proportional to 194,424.60, 291,636.90 and 69,749.40 is: 104,624.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,424.60 : 291,636.90 = 69,749.40 : x
  2. Step 2: Convert to fraction form
    194,424.60/291,636.90 = 69,749.40/x
  3. Step 3: Cross multiply
    194,424.60x = 291,636.90 × 69,749.40
  4. Step 4: Simplify right side
    194,424.60x = 20,341,498,792.86
  5. Step 5: Solve for x
    x = 20,341,498,792.86/194,424.60
  6. Step 6: Final answer
    x = 104,624.10

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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.