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Finding the Fourth Proportional to 91,598.86, 137,397.21 and 51,620.86

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Solution

The fourth proportional to 91,598.86, 137,397.21 and 51,620.86 is: 77,430.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,598.86 : 137,397.21 = 51,620.86 : x
  2. Step 2: Convert to fraction form
    91,598.86/137,397.21 = 51,620.86/x
  3. Step 3: Cross multiply
    91,598.86x = 137,397.21 × 51,620.86
  4. Step 4: Simplify right side
    91,598.86x = 7,092,562,141.80
  5. Step 5: Solve for x
    x = 7,092,562,141.80/91,598.86
  6. Step 6: Final answer
    x = 77,430.68

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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.