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Finding the Fourth Proportional to 52,076.70, 78,005.70 and 43,328.70

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Solution

The fourth proportional to 52,076.70, 78,005.70 and 43,328.70 is: 64,902.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,076.70 : 78,005.70 = 43,328.70 : x
  2. Step 2: Convert to fraction form
    52,076.70/78,005.70 = 43,328.70/x
  3. Step 3: Cross multiply
    52,076.70x = 78,005.70 × 43,328.70
  4. Step 4: Simplify right side
    52,076.70x = 3,379,885,573.59
  5. Step 5: Solve for x
    x = 3,379,885,573.59/52,076.70
  6. Step 6: Final answer
    x = 64,902.07

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1.5x scale

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.