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Finding the Fourth Proportional to 156,959.06, 216,602.40 and 85,339.10

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Solution

The fourth proportional to 156,959.06, 216,602.40 and 85,339.10 is: 117,767.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,959.06 : 216,602.40 = 85,339.10 : x
  2. Step 2: Convert to fraction form
    156,959.06/216,602.40 = 85,339.10/x
  3. Step 3: Cross multiply
    156,959.06x = 216,602.40 × 85,339.10
  4. Step 4: Simplify right side
    156,959.06x = 18,484,652,790.83
  5. Step 5: Solve for x
    x = 18,484,652,790.83/156,959.06
  6. Step 6: Final answer
    x = 117,767.36

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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.