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Finding the Fourth Proportional to 287,044.58, 430,663.73 and 127,098.68

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Solution

The fourth proportional to 287,044.58, 430,663.73 and 127,098.68 is: 190,690.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,044.58 : 430,663.73 = 127,098.68 : x
  2. Step 2: Convert to fraction form
    287,044.58/430,663.73 = 127,098.68/x
  3. Step 3: Cross multiply
    287,044.58x = 430,663.73 × 127,098.68
  4. Step 4: Simplify right side
    287,044.58x = 54,736,791,606.88
  5. Step 5: Solve for x
    x = 54,736,791,606.88/287,044.58
  6. Step 6: Final answer
    x = 190,690.91

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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.