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Finding the Fourth Proportional to 525,695.88, 725,459.52 and 283,978.38

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Solution

The fourth proportional to 525,695.88, 725,459.52 and 283,978.38 is: 391,889.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,695.88 : 725,459.52 = 283,978.38 : x
  2. Step 2: Convert to fraction form
    525,695.88/725,459.52 = 283,978.38/x
  3. Step 3: Cross multiply
    525,695.88x = 725,459.52 × 283,978.38
  4. Step 4: Simplify right side
    525,695.88x = 206,014,819,245.18
  5. Step 5: Solve for x
    x = 206,014,819,245.18/525,695.88
  6. Step 6: Final answer
    x = 391,889.74

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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.