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Finding the Fourth Proportional to 13,248.60, 19,881.25 and 7,633.47

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Solution

The fourth proportional to 13,248.60, 19,881.25 and 7,633.47 is: 11,455.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,248.60 : 19,881.25 = 7,633.47 : x
  2. Step 2: Convert to fraction form
    13,248.60/19,881.25 = 7,633.47/x
  3. Step 3: Cross multiply
    13,248.60x = 19,881.25 × 7,633.47
  4. Step 4: Simplify right side
    13,248.60x = 151,762,980.91
  5. Step 5: Solve for x
    x = 151,762,980.91/13,248.60
  6. Step 6: Final answer
    x = 11,455.02

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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.