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Finding the Fourth Proportional to 52,798.40, 79,000.74 and 52,207.91

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Solution

The fourth proportional to 52,798.40, 79,000.74 and 52,207.91 is: 78,117.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,798.40 : 79,000.74 = 52,207.91 : x
  2. Step 2: Convert to fraction form
    52,798.40/79,000.74 = 52,207.91/x
  3. Step 3: Cross multiply
    52,798.40x = 79,000.74 × 52,207.91
  4. Step 4: Simplify right side
    52,798.40x = 4,124,463,128.85
  5. Step 5: Solve for x
    x = 4,124,463,128.85/52,798.40
  6. Step 6: Final answer
    x = 78,117.21

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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.