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Finding the Fourth Proportional to 525,896.28, 725,589.90 and 354,056.40

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Solution

The fourth proportional to 525,896.28, 725,589.90 and 354,056.40 is: 488,498.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,896.28 : 725,589.90 = 354,056.40 : x
  2. Step 2: Convert to fraction form
    525,896.28/725,589.90 = 354,056.40/x
  3. Step 3: Cross multiply
    525,896.28x = 725,589.90 × 354,056.40
  4. Step 4: Simplify right side
    525,896.28x = 256,899,747,870.36
  5. Step 5: Solve for x
    x = 256,899,747,870.36/525,896.28
  6. Step 6: Final answer
    x = 488,498.89

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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.