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Finding the Fourth Proportional to 56,998.69, 78,658.19 and 31,848.19

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Solution

The fourth proportional to 56,998.69, 78,658.19 and 31,848.19 is: 43,950.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,998.69 : 78,658.19 = 31,848.19 : x
  2. Step 2: Convert to fraction form
    56,998.69/78,658.19 = 31,848.19/x
  3. Step 3: Cross multiply
    56,998.69x = 78,658.19 × 31,848.19
  4. Step 4: Simplify right side
    56,998.69x = 2,505,120,743.72
  5. Step 5: Solve for x
    x = 2,505,120,743.72/56,998.69
  6. Step 6: Final answer
    x = 43,950.50

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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.