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Finding the Fourth Proportional to 525,657.70, 725,407.92 and 283,940.28

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Solution

The fourth proportional to 525,657.70, 725,407.92 and 283,940.28 is: 391,837.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,657.70 : 725,407.92 = 283,940.28 : x
  2. Step 2: Convert to fraction form
    525,657.70/725,407.92 = 283,940.28/x
  3. Step 3: Cross multiply
    525,657.70x = 725,407.92 × 283,940.28
  4. Step 4: Simplify right side
    525,657.70x = 205,972,523,899.45
  5. Step 5: Solve for x
    x = 205,972,523,899.45/525,657.70
  6. Step 6: Final answer
    x = 391,837.74

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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.