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Finding the Fourth Proportional to 189,265.56, 283,307.80 and 139,401.96

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Solution

The fourth proportional to 189,265.56, 283,307.80 and 139,401.96 is: 208,667.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,265.56 : 283,307.80 = 139,401.96 : x
  2. Step 2: Convert to fraction form
    189,265.56/283,307.80 = 139,401.96/x
  3. Step 3: Cross multiply
    189,265.56x = 283,307.80 × 139,401.96
  4. Step 4: Simplify right side
    189,265.56x = 39,493,662,603.29
  5. Step 5: Solve for x
    x = 39,493,662,603.29/189,265.56
  6. Step 6: Final answer
    x = 208,667.98

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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.