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Finding the Fourth Proportional to 472,862.40, 708,904.80 and 251,246.40

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Solution

The fourth proportional to 472,862.40, 708,904.80 and 251,246.40 is: 376,663.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,862.40 : 708,904.80 = 251,246.40 : x
  2. Step 2: Convert to fraction form
    472,862.40/708,904.80 = 251,246.40/x
  3. Step 3: Cross multiply
    472,862.40x = 708,904.80 × 251,246.40
  4. Step 4: Simplify right side
    472,862.40x = 178,109,778,942.72
  5. Step 5: Solve for x
    x = 178,109,778,942.72/472,862.40
  6. Step 6: Final answer
    x = 376,663.02

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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.