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Finding the Fourth Proportional to 76,768.66, 105,931.20 and 44,503.12

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Solution

The fourth proportional to 76,768.66, 105,931.20 and 44,503.12 is: 61,408.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,768.66 : 105,931.20 = 44,503.12 : x
  2. Step 2: Convert to fraction form
    76,768.66/105,931.20 = 44,503.12/x
  3. Step 3: Cross multiply
    76,768.66x = 105,931.20 × 44,503.12
  4. Step 4: Simplify right side
    76,768.66x = 4,714,268,905.34
  5. Step 5: Solve for x
    x = 4,714,268,905.34/76,768.66
  6. Step 6: Final answer
    x = 61,408.77

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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.