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Finding the Fourth Proportional to 183,808.72, 253,638.12 and 103,217.92

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Solution

The fourth proportional to 183,808.72, 253,638.12 and 103,217.92 is: 142,430.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,808.72 : 253,638.12 = 103,217.92 : x
  2. Step 2: Convert to fraction form
    183,808.72/253,638.12 = 103,217.92/x
  3. Step 3: Cross multiply
    183,808.72x = 253,638.12 × 103,217.92
  4. Step 4: Simplify right side
    183,808.72x = 26,179,999,179.11
  5. Step 5: Solve for x
    x = 26,179,999,179.11/183,808.72
  6. Step 6: Final answer
    x = 142,430.67

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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.