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Finding the Fourth Proportional to 156,993.67, 216,656.98 and 89,938.63

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Solution

The fourth proportional to 156,993.67, 216,656.98 and 89,938.63 is: 124,118.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,993.67 : 216,656.98 = 89,938.63 : x
  2. Step 2: Convert to fraction form
    156,993.67/216,656.98 = 89,938.63/x
  3. Step 3: Cross multiply
    156,993.67x = 216,656.98 × 89,938.63
  4. Step 4: Simplify right side
    156,993.67x = 19,485,832,007.11
  5. Step 5: Solve for x
    x = 19,485,832,007.11/156,993.67
  6. Step 6: Final answer
    x = 124,118.58

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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.