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Finding the Fourth Proportional to 885,685.95, 1,222,413.47 and 554,695.34

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Solution

The fourth proportional to 885,685.95, 1,222,413.47 and 554,695.34 is: 765,584.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,685.95 : 1,222,413.47 = 554,695.34 : x
  2. Step 2: Convert to fraction form
    885,685.95/1,222,413.47 = 554,695.34/x
  3. Step 3: Cross multiply
    885,685.95x = 1,222,413.47 × 554,695.34
  4. Step 4: Simplify right side
    885,685.95x = 678,067,046,476.69
  5. Step 5: Solve for x
    x = 678,067,046,476.69/885,685.95
  6. Step 6: Final answer
    x = 765,584.06

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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.