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Finding the Fourth Proportional to 525,617.50, 725,352.24 and 287,153.50

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Solution

The fourth proportional to 525,617.50, 725,352.24 and 287,153.50 is: 396,271.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,617.50 : 725,352.24 = 287,153.50 : x
  2. Step 2: Convert to fraction form
    525,617.50/725,352.24 = 287,153.50/x
  3. Step 3: Cross multiply
    525,617.50x = 725,352.24 × 287,153.50
  4. Step 4: Simplify right side
    525,617.50x = 208,287,434,448.84
  5. Step 5: Solve for x
    x = 208,287,434,448.84/525,617.50
  6. Step 6: Final answer
    x = 396,271.88

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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.