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Finding the Fourth Proportional to 42,504.84, 63,764.54 and 12,925.66

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Solution

The fourth proportional to 42,504.84, 63,764.54 and 12,925.66 is: 19,390.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,504.84 : 63,764.54 = 12,925.66 : x
  2. Step 2: Convert to fraction form
    42,504.84/63,764.54 = 12,925.66/x
  3. Step 3: Cross multiply
    42,504.84x = 63,764.54 × 12,925.66
  4. Step 4: Simplify right side
    42,504.84x = 824,198,764.10
  5. Step 5: Solve for x
    x = 824,198,764.10/42,504.84
  6. Step 6: Final answer
    x = 19,390.70

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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.