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Finding the Fourth Proportional to 127,690.65, 191,567.30 and 64,355.13

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Solution

The fourth proportional to 127,690.65, 191,567.30 and 64,355.13 is: 96,548.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,690.65 : 191,567.30 = 64,355.13 : x
  2. Step 2: Convert to fraction form
    127,690.65/191,567.30 = 64,355.13/x
  3. Step 3: Cross multiply
    127,690.65x = 191,567.30 × 64,355.13
  4. Step 4: Simplify right side
    127,690.65x = 12,328,338,173.47
  5. Step 5: Solve for x
    x = 12,328,338,173.47/127,690.65
  6. Step 6: Final answer
    x = 96,548.48

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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.