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Finding the Fourth Proportional to 290,777.91, 401,275.71 and 161,718.18

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Solution

The fourth proportional to 290,777.91, 401,275.71 and 161,718.18 is: 223,172.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,777.91 : 401,275.71 = 161,718.18 : x
  2. Step 2: Convert to fraction form
    290,777.91/401,275.71 = 161,718.18/x
  3. Step 3: Cross multiply
    290,777.91x = 401,275.71 × 161,718.18
  4. Step 4: Simplify right side
    290,777.91x = 64,893,577,499.41
  5. Step 5: Solve for x
    x = 64,893,577,499.41/290,777.91
  6. Step 6: Final answer
    x = 223,172.31

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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.