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Finding the Fourth Proportional to 94,429.94, 130,310.78 and 51,988.80

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Solution

The fourth proportional to 94,429.94, 130,310.78 and 51,988.80 is: 71,743.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,429.94 : 130,310.78 = 51,988.80 : x
  2. Step 2: Convert to fraction form
    94,429.94/130,310.78 = 51,988.80/x
  3. Step 3: Cross multiply
    94,429.94x = 130,310.78 × 51,988.80
  4. Step 4: Simplify right side
    94,429.94x = 6,774,701,079.26
  5. Step 5: Solve for x
    x = 6,774,701,079.26/94,429.94
  6. Step 6: Final answer
    x = 71,743.15

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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.