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Finding the Fourth Proportional to 396,124.64, 546,721.86 and 235,068.50

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Solution

The fourth proportional to 396,124.64, 546,721.86 and 235,068.50 is: 324,435.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,124.64 : 546,721.86 = 235,068.50 : x
  2. Step 2: Convert to fraction form
    396,124.64/546,721.86 = 235,068.50/x
  3. Step 3: Cross multiply
    396,124.64x = 546,721.86 × 235,068.50
  4. Step 4: Simplify right side
    396,124.64x = 128,517,087,547.41
  5. Step 5: Solve for x
    x = 128,517,087,547.41/396,124.64
  6. Step 6: Final answer
    x = 324,435.98

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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.