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Finding the Fourth Proportional to 34,978.40, 48,271.68 and 19,063.74

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Solution

The fourth proportional to 34,978.40, 48,271.68 and 19,063.74 is: 26,308.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,978.40 : 48,271.68 = 19,063.74 : x
  2. Step 2: Convert to fraction form
    34,978.40/48,271.68 = 19,063.74/x
  3. Step 3: Cross multiply
    34,978.40x = 48,271.68 × 19,063.74
  4. Step 4: Simplify right side
    34,978.40x = 920,238,756.88
  5. Step 5: Solve for x
    x = 920,238,756.88/34,978.40
  6. Step 6: Final answer
    x = 26,308.77

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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.