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Finding the Fourth Proportional to 70,866.70, 97,714.89 and 52,931.41

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Solution

The fourth proportional to 70,866.70, 97,714.89 and 52,931.41 is: 72,984.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,866.70 : 97,714.89 = 52,931.41 : x
  2. Step 2: Convert to fraction form
    70,866.70/97,714.89 = 52,931.41/x
  3. Step 3: Cross multiply
    70,866.70x = 97,714.89 × 52,931.41
  4. Step 4: Simplify right side
    70,866.70x = 5,172,186,661.41
  5. Step 5: Solve for x
    x = 5,172,186,661.41/70,866.70
  6. Step 6: Final answer
    x = 72,984.73

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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.