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Finding the Fourth Proportional to 640,260.24, 883,535.40 and 353,774.40

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Solution

The fourth proportional to 640,260.24, 883,535.40 and 353,774.40 is: 488,195.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,260.24 : 883,535.40 = 353,774.40 : x
  2. Step 2: Convert to fraction form
    640,260.24/883,535.40 = 353,774.40/x
  3. Step 3: Cross multiply
    640,260.24x = 883,535.40 × 353,774.40
  4. Step 4: Simplify right side
    640,260.24x = 312,572,206,013.76
  5. Step 5: Solve for x
    x = 312,572,206,013.76/640,260.24
  6. Step 6: Final answer
    x = 488,195.56

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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.