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Finding the Fourth Proportional to 156,809.64, 216,415.85 and 93,147.69

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Solution

The fourth proportional to 156,809.64, 216,415.85 and 93,147.69 is: 128,554.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,809.64 : 216,415.85 = 93,147.69 : x
  2. Step 2: Convert to fraction form
    156,809.64/216,415.85 = 93,147.69/x
  3. Step 3: Cross multiply
    156,809.64x = 216,415.85 × 93,147.69
  4. Step 4: Simplify right side
    156,809.64x = 20,158,636,506.89
  5. Step 5: Solve for x
    x = 20,158,636,506.89/156,809.64
  6. Step 6: Final answer
    x = 128,554.83

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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.