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Finding the Fourth Proportional to 61,938.70, 92,908.05 and 43,276.30

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Solution

The fourth proportional to 61,938.70, 92,908.05 and 43,276.30 is: 64,914.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,938.70 : 92,908.05 = 43,276.30 : x
  2. Step 2: Convert to fraction form
    61,938.70/92,908.05 = 43,276.30/x
  3. Step 3: Cross multiply
    61,938.70x = 92,908.05 × 43,276.30
  4. Step 4: Simplify right side
    61,938.70x = 4,020,716,644.22
  5. Step 5: Solve for x
    x = 4,020,716,644.22/61,938.70
  6. Step 6: Final answer
    x = 64,914.45

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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.