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Finding the Fourth Proportional to 404,925.28, 607,390.08 and 265,566.40

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Solution

The fourth proportional to 404,925.28, 607,390.08 and 265,566.40 is: 398,351.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,925.28 : 607,390.08 = 265,566.40 : x
  2. Step 2: Convert to fraction form
    404,925.28/607,390.08 = 265,566.40/x
  3. Step 3: Cross multiply
    404,925.28x = 607,390.08 × 265,566.40
  4. Step 4: Simplify right side
    404,925.28x = 161,302,396,941.31
  5. Step 5: Solve for x
    x = 161,302,396,941.31/404,925.28
  6. Step 6: Final answer
    x = 398,351.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.