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Finding the Fourth Proportional to 76,708.59, 105,830.46 and 44,425.59

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Solution

The fourth proportional to 76,708.59, 105,830.46 and 44,425.59 is: 61,291.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,708.59 : 105,830.46 = 44,425.59 : x
  2. Step 2: Convert to fraction form
    76,708.59/105,830.46 = 44,425.59/x
  3. Step 3: Cross multiply
    76,708.59x = 105,830.46 × 44,425.59
  4. Step 4: Simplify right side
    76,708.59x = 4,701,580,625.47
  5. Step 5: Solve for x
    x = 4,701,580,625.47/76,708.59
  6. Step 6: Final answer
    x = 61,291.45

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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.