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Finding the Fourth Proportional to 657,965.76, 986,520.96 and 258,645.60

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Solution

The fourth proportional to 657,965.76, 986,520.96 and 258,645.60 is: 387,800.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,965.76 : 986,520.96 = 258,645.60 : x
  2. Step 2: Convert to fraction form
    657,965.76/986,520.96 = 258,645.60/x
  3. Step 3: Cross multiply
    657,965.76x = 986,520.96 × 258,645.60
  4. Step 4: Simplify right side
    657,965.76x = 255,159,305,611.78
  5. Step 5: Solve for x
    x = 255,159,305,611.78/657,965.76
  6. Step 6: Final answer
    x = 387,800.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.