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Finding the Fourth Proportional to 919,658.48, 1,269,116.48 and 517,250.48

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Solution

The fourth proportional to 919,658.48, 1,269,116.48 and 517,250.48 is: 713,798.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,658.48 : 1,269,116.48 = 517,250.48 : x
  2. Step 2: Convert to fraction form
    919,658.48/1,269,116.48 = 517,250.48/x
  3. Step 3: Cross multiply
    919,658.48x = 1,269,116.48 × 517,250.48
  4. Step 4: Simplify right side
    919,658.48x = 656,451,108,455.91
  5. Step 5: Solve for x
    x = 656,451,108,455.91/919,658.48
  6. Step 6: Final answer
    x = 713,798.79

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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.