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Finding the Fourth Proportional to 666,051.92, 919,260.42 and 495,105.20

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Solution

The fourth proportional to 666,051.92, 919,260.42 and 495,105.20 is: 683,326.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,051.92 : 919,260.42 = 495,105.20 : x
  2. Step 2: Convert to fraction form
    666,051.92/919,260.42 = 495,105.20/x
  3. Step 3: Cross multiply
    666,051.92x = 919,260.42 × 495,105.20
  4. Step 4: Simplify right side
    666,051.92x = 455,130,614,096.18
  5. Step 5: Solve for x
    x = 455,130,614,096.18/666,051.92
  6. Step 6: Final answer
    x = 683,326.03

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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.