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Finding the Fourth Proportional to 117,470.70, 162,070.11 and 75,054.06

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Solution

The fourth proportional to 117,470.70, 162,070.11 and 75,054.06 is: 103,549.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,470.70 : 162,070.11 = 75,054.06 : x
  2. Step 2: Convert to fraction form
    117,470.70/162,070.11 = 75,054.06/x
  3. Step 3: Cross multiply
    117,470.70x = 162,070.11 × 75,054.06
  4. Step 4: Simplify right side
    117,470.70x = 12,164,019,760.15
  5. Step 5: Solve for x
    x = 12,164,019,760.15/117,470.70
  6. Step 6: Final answer
    x = 103,549.39

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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.