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Finding the Fourth Proportional to 364,310.40, 546,368.40 and 127,628.40

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Solution

The fourth proportional to 364,310.40, 546,368.40 and 127,628.40 is: 191,408.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,310.40 : 546,368.40 = 127,628.40 : x
  2. Step 2: Convert to fraction form
    364,310.40/546,368.40 = 127,628.40/x
  3. Step 3: Cross multiply
    364,310.40x = 546,368.40 × 127,628.40
  4. Step 4: Simplify right side
    364,310.40x = 69,732,124,702.56
  5. Step 5: Solve for x
    x = 69,732,124,702.56/364,310.40
  6. Step 6: Final answer
    x = 191,408.55

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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.