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Finding the Fourth Proportional to 291,012.76, 401,593.62 and 163,688.20

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Solution

The fourth proportional to 291,012.76, 401,593.62 and 163,688.20 is: 225,887.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,012.76 : 401,593.62 = 163,688.20 : x
  2. Step 2: Convert to fraction form
    291,012.76/401,593.62 = 163,688.20/x
  3. Step 3: Cross multiply
    291,012.76x = 401,593.62 × 163,688.20
  4. Step 4: Simplify right side
    291,012.76x = 65,736,136,789.28
  5. Step 5: Solve for x
    x = 65,736,136,789.28/291,012.76
  6. Step 6: Final answer
    x = 225,887.47

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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.