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Finding the Fourth Proportional to 156,885.58, 216,503.52 and 85,265.77

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Solution

The fourth proportional to 156,885.58, 216,503.52 and 85,265.77 is: 117,667.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,885.58 : 216,503.52 = 85,265.77 : x
  2. Step 2: Convert to fraction form
    156,885.58/216,503.52 = 85,265.77/x
  3. Step 3: Cross multiply
    156,885.58x = 216,503.52 × 85,265.77
  4. Step 4: Simplify right side
    156,885.58x = 18,460,339,340.51
  5. Step 5: Solve for x
    x = 18,460,339,340.51/156,885.58
  6. Step 6: Final answer
    x = 117,667.53

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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.