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Finding the Fourth Proportional to 681,695.76, 942,440.76 and 511,634.64

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Solution

The fourth proportional to 681,695.76, 942,440.76 and 511,634.64 is: 707,332.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,695.76 : 942,440.76 = 511,634.64 : x
  2. Step 2: Convert to fraction form
    681,695.76/942,440.76 = 511,634.64/x
  3. Step 3: Cross multiply
    681,695.76x = 942,440.76 × 511,634.64
  4. Step 4: Simplify right side
    681,695.76x = 482,185,338,963.93
  5. Step 5: Solve for x
    x = 482,185,338,963.93/681,695.76
  6. Step 6: Final answer
    x = 707,332.17

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Double scale
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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.