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Finding the Fourth Proportional to 525,678.03, 725,436.08 and 283,960.61

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Solution

The fourth proportional to 525,678.03, 725,436.08 and 283,960.61 is: 391,865.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,678.03 : 725,436.08 = 283,960.61 : x
  2. Step 2: Convert to fraction form
    525,678.03/725,436.08 = 283,960.61/x
  3. Step 3: Cross multiply
    525,678.03x = 725,436.08 × 283,960.61
  4. Step 4: Simplify right side
    525,678.03x = 205,995,266,745.83
  5. Step 5: Solve for x
    x = 205,995,266,745.83/525,678.03
  6. Step 6: Final answer
    x = 391,865.85

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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.