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Finding the Fourth Proportional to 472,798.96, 652,439.82 and 257,926.21

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Solution

The fourth proportional to 472,798.96, 652,439.82 and 257,926.21 is: 355,925.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,798.96 : 652,439.82 = 257,926.21 : x
  2. Step 2: Convert to fraction form
    472,798.96/652,439.82 = 257,926.21/x
  3. Step 3: Cross multiply
    472,798.96x = 652,439.82 × 257,926.21
  4. Step 4: Simplify right side
    472,798.96x = 168,281,330,025.68
  5. Step 5: Solve for x
    x = 168,281,330,025.68/472,798.96
  6. Step 6: Final answer
    x = 355,925.76

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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.