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Finding the Fourth Proportional to 77,898.59, 107,497.50 and 49,233.63

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Solution

The fourth proportional to 77,898.59, 107,497.50 and 49,233.63 is: 67,940.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,898.59 : 107,497.50 = 49,233.63 : x
  2. Step 2: Convert to fraction form
    77,898.59/107,497.50 = 49,233.63/x
  3. Step 3: Cross multiply
    77,898.59x = 107,497.50 × 49,233.63
  4. Step 4: Simplify right side
    77,898.59x = 5,292,492,140.93
  5. Step 5: Solve for x
    x = 5,292,492,140.93/77,898.59
  6. Step 6: Final answer
    x = 67,940.80

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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.