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Finding the Fourth Proportional to 156,873.51, 216,486.81 and 85,253.53

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Solution

The fourth proportional to 156,873.51, 216,486.81 and 85,253.53 is: 117,650.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,873.51 : 216,486.81 = 85,253.53 : x
  2. Step 2: Convert to fraction form
    156,873.51/216,486.81 = 85,253.53/x
  3. Step 3: Cross multiply
    156,873.51x = 216,486.81 × 85,253.53
  4. Step 4: Simplify right side
    156,873.51x = 18,456,264,750.94
  5. Step 5: Solve for x
    x = 18,456,264,750.94/156,873.51
  6. Step 6: Final answer
    x = 117,650.61

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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.