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Finding the Fourth Proportional to 90,770.40, 125,262 and 50,484

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Solution

The fourth proportional to 90,770.40, 125,262 and 50,484 is: 69,667.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,770.40 : 125,262 = 50,484 : x
  2. Step 2: Convert to fraction form
    90,770.40/125,262 = 50,484/x
  3. Step 3: Cross multiply
    90,770.40x = 125,262 × 50,484
  4. Step 4: Simplify right side
    90,770.40x = 6,323,726,808
  5. Step 5: Solve for x
    x = 6,323,726,808/90,770.40
  6. Step 6: Final answer
    x = 69,667.28

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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.