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Finding the Fourth Proportional to 401,528.01, 554,759.51 and 341,730.57

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Solution

The fourth proportional to 401,528.01, 554,759.51 and 341,730.57 is: 472,142.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,528.01 : 554,759.51 = 341,730.57 : x
  2. Step 2: Convert to fraction form
    401,528.01/554,759.51 = 341,730.57/x
  3. Step 3: Cross multiply
    401,528.01x = 554,759.51 × 341,730.57
  4. Step 4: Simplify right side
    401,528.01x = 189,578,281,856.57
  5. Step 5: Solve for x
    x = 189,578,281,856.57/401,528.01
  6. Step 6: Final answer
    x = 472,142.11

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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.