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Finding the Fourth Proportional to 121,141.63, 181,749.66 and 62,018.80

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Solution

The fourth proportional to 121,141.63, 181,749.66 and 62,018.80 is: 93,047.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,141.63 : 181,749.66 = 62,018.80 : x
  2. Step 2: Convert to fraction form
    121,141.63/181,749.66 = 62,018.80/x
  3. Step 3: Cross multiply
    121,141.63x = 181,749.66 × 62,018.80
  4. Step 4: Simplify right side
    121,141.63x = 11,271,895,813.61
  5. Step 5: Solve for x
    x = 11,271,895,813.61/121,141.63
  6. Step 6: Final answer
    x = 93,047.25

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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.