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Finding the Fourth Proportional to 401,163.79, 553,667.01 and 256,032.20

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Solution

The fourth proportional to 401,163.79, 553,667.01 and 256,032.20 is: 353,363.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,163.79 : 553,667.01 = 256,032.20 : x
  2. Step 2: Convert to fraction form
    401,163.79/553,667.01 = 256,032.20/x
  3. Step 3: Cross multiply
    401,163.79x = 553,667.01 × 256,032.20
  4. Step 4: Simplify right side
    401,163.79x = 141,756,582,637.72
  5. Step 5: Solve for x
    x = 141,756,582,637.72/401,163.79
  6. Step 6: Final answer
    x = 353,363.35

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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.