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Finding the Fourth Proportional to 156,661.01, 216,192.46 and 85,041.08

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Solution

The fourth proportional to 156,661.01, 216,192.46 and 85,041.08 is: 117,356.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,661.01 : 216,192.46 = 85,041.08 : x
  2. Step 2: Convert to fraction form
    156,661.01/216,192.46 = 85,041.08/x
  3. Step 3: Cross multiply
    156,661.01x = 216,192.46 × 85,041.08
  4. Step 4: Simplify right side
    156,661.01x = 18,385,239,205.29
  5. Step 5: Solve for x
    x = 18,385,239,205.29/156,661.01
  6. Step 6: Final answer
    x = 117,356.83

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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.