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Finding the Fourth Proportional to 453,151.48, 679,728.30 and 137,610.76

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Solution

The fourth proportional to 453,151.48, 679,728.30 and 137,610.76 is: 206,416.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,151.48 : 679,728.30 = 137,610.76 : x
  2. Step 2: Convert to fraction form
    453,151.48/679,728.30 = 137,610.76/x
  3. Step 3: Cross multiply
    453,151.48x = 679,728.30 × 137,610.76
  4. Step 4: Simplify right side
    453,151.48x = 93,537,927,956.51
  5. Step 5: Solve for x
    x = 93,537,927,956.51/453,151.48
  6. Step 6: Final answer
    x = 206,416.47

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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.