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Finding the Fourth Proportional to 115,574.61, 159,477.27 and 64,580.94

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Solution

The fourth proportional to 115,574.61, 159,477.27 and 64,580.94 is: 89,112.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,574.61 : 159,477.27 = 64,580.94 : x
  2. Step 2: Convert to fraction form
    115,574.61/159,477.27 = 64,580.94/x
  3. Step 3: Cross multiply
    115,574.61x = 159,477.27 × 64,580.94
  4. Step 4: Simplify right side
    115,574.61x = 10,299,192,005.23
  5. Step 5: Solve for x
    x = 10,299,192,005.23/115,574.61
  6. Step 6: Final answer
    x = 89,112.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.