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Finding the Fourth Proportional to 156,984.63, 216,636.32 and 85,364.03

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Solution

The fourth proportional to 156,984.63, 216,636.32 and 85,364.03 is: 117,801.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,984.63 : 216,636.32 = 85,364.03 : x
  2. Step 2: Convert to fraction form
    156,984.63/216,636.32 = 85,364.03/x
  3. Step 3: Cross multiply
    156,984.63x = 216,636.32 × 85,364.03
  4. Step 4: Simplify right side
    156,984.63x = 18,492,948,777.98
  5. Step 5: Solve for x
    x = 18,492,948,777.98/156,984.63
  6. Step 6: Final answer
    x = 117,801.01

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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.