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Finding the Fourth Proportional to 191,509.71, 264,291.57 and 106,626.75

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Solution

The fourth proportional to 191,509.71, 264,291.57 and 106,626.75 is: 147,149.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,509.71 : 264,291.57 = 106,626.75 : x
  2. Step 2: Convert to fraction form
    191,509.71/264,291.57 = 106,626.75/x
  3. Step 3: Cross multiply
    191,509.71x = 264,291.57 × 106,626.75
  4. Step 4: Simplify right side
    191,509.71x = 28,180,551,161.50
  5. Step 5: Solve for x
    x = 28,180,551,161.50/191,509.71
  6. Step 6: Final answer
    x = 147,149.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.