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Finding the Fourth Proportional to 72,699.30, 100,307.11 and 44,394.66

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Solution

The fourth proportional to 72,699.30, 100,307.11 and 44,394.66 is: 61,253.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,699.30 : 100,307.11 = 44,394.66 : x
  2. Step 2: Convert to fraction form
    72,699.30/100,307.11 = 44,394.66/x
  3. Step 3: Cross multiply
    72,699.30x = 100,307.11 × 44,394.66
  4. Step 4: Simplify right side
    72,699.30x = 4,453,100,044.03
  5. Step 5: Solve for x
    x = 4,453,100,044.03/72,699.30
  6. Step 6: Final answer
    x = 61,253.69

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1.5x scale

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.