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Finding the Fourth Proportional to 681,276.55, 940,116.66 and 409,182.77

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Solution

The fourth proportional to 681,276.55, 940,116.66 and 409,182.77 is: 564,645.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,276.55 : 940,116.66 = 409,182.77 : x
  2. Step 2: Convert to fraction form
    681,276.55/940,116.66 = 409,182.77/x
  3. Step 3: Cross multiply
    681,276.55x = 940,116.66 × 409,182.77
  4. Step 4: Simplify right side
    681,276.55x = 384,679,539,061.95
  5. Step 5: Solve for x
    x = 384,679,539,061.95/681,276.55
  6. Step 6: Final answer
    x = 564,645.21

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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.