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Finding the Fourth Proportional to 48,663.90, 72,945.45 and 26,430.30

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Solution

The fourth proportional to 48,663.90, 72,945.45 and 26,430.30 is: 39,618.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,663.90 : 72,945.45 = 26,430.30 : x
  2. Step 2: Convert to fraction form
    48,663.90/72,945.45 = 26,430.30/x
  3. Step 3: Cross multiply
    48,663.90x = 72,945.45 × 26,430.30
  4. Step 4: Simplify right side
    48,663.90x = 1,927,970,127.14
  5. Step 5: Solve for x
    x = 1,927,970,127.14/48,663.90
  6. Step 6: Final answer
    x = 39,618.08

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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.