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Finding the Fourth Proportional to 525,939.84, 725,803.20 and 287,475.84

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Solution

The fourth proportional to 525,939.84, 725,803.20 and 287,475.84 is: 396,720.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,939.84 : 725,803.20 = 287,475.84 : x
  2. Step 2: Convert to fraction form
    525,939.84/725,803.20 = 287,475.84/x
  3. Step 3: Cross multiply
    525,939.84x = 725,803.20 × 287,475.84
  4. Step 4: Simplify right side
    525,939.84x = 208,650,884,594.69
  5. Step 5: Solve for x
    x = 208,650,884,594.69/525,939.84
  6. Step 6: Final answer
    x = 396,720.06

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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.