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Finding the Fourth Proportional to 91,802.96, 137,593.71 and 47,405.51

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Solution

The fourth proportional to 91,802.96, 137,593.71 and 47,405.51 is: 71,051.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,802.96 : 137,593.71 = 47,405.51 : x
  2. Step 2: Convert to fraction form
    91,802.96/137,593.71 = 47,405.51/x
  3. Step 3: Cross multiply
    91,802.96x = 137,593.71 × 47,405.51
  4. Step 4: Simplify right side
    91,802.96x = 6,522,699,995.34
  5. Step 5: Solve for x
    x = 6,522,699,995.34/91,802.96
  6. Step 6: Final answer
    x = 71,051.09

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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.