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Finding the Fourth Proportional to 266,782.10, 368,191.05 and 153,626.90

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Solution

The fourth proportional to 266,782.10, 368,191.05 and 153,626.90 is: 212,023.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,782.10 : 368,191.05 = 153,626.90 : x
  2. Step 2: Convert to fraction form
    266,782.10/368,191.05 = 153,626.90/x
  3. Step 3: Cross multiply
    266,782.10x = 368,191.05 × 153,626.90
  4. Step 4: Simplify right side
    266,782.10x = 56,564,049,619.25
  5. Step 5: Solve for x
    x = 56,564,049,619.25/266,782.10
  6. Step 6: Final answer
    x = 212,023.41

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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.