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Finding the Fourth Proportional to 91,652.84, 126,470.40 and 53,420.48

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Solution

The fourth proportional to 91,652.84, 126,470.40 and 53,420.48 is: 73,714.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,652.84 : 126,470.40 = 53,420.48 : x
  2. Step 2: Convert to fraction form
    91,652.84/126,470.40 = 53,420.48/x
  3. Step 3: Cross multiply
    91,652.84x = 126,470.40 × 53,420.48
  4. Step 4: Simplify right side
    91,652.84x = 6,756,109,473.79
  5. Step 5: Solve for x
    x = 6,756,109,473.79/91,652.84
  6. Step 6: Final answer
    x = 73,714.13

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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.