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Finding the Fourth Proportional to 640,398.32, 883,751.09 and 350,014.53

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Solution

The fourth proportional to 640,398.32, 883,751.09 and 350,014.53 is: 483,020.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,398.32 : 883,751.09 = 350,014.53 : x
  2. Step 2: Convert to fraction form
    640,398.32/883,751.09 = 350,014.53/x
  3. Step 3: Cross multiply
    640,398.32x = 883,751.09 × 350,014.53
  4. Step 4: Simplify right side
    640,398.32x = 309,325,720,653.27
  5. Step 5: Solve for x
    x = 309,325,720,653.27/640,398.32
  6. Step 6: Final answer
    x = 483,020.82

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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.