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Finding the Fourth Proportional to 51,340.40, 76,895.40 and 42,124.40

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Solution

The fourth proportional to 51,340.40, 76,895.40 and 42,124.40 is: 63,092.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,340.40 : 76,895.40 = 42,124.40 : x
  2. Step 2: Convert to fraction form
    51,340.40/76,895.40 = 42,124.40/x
  3. Step 3: Cross multiply
    51,340.40x = 76,895.40 × 42,124.40
  4. Step 4: Simplify right side
    51,340.40x = 3,239,172,587.76
  5. Step 5: Solve for x
    x = 3,239,172,587.76/51,340.40
  6. Step 6: Final answer
    x = 63,092.08

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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.