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Finding the Fourth Proportional to 116,656.32, 160,984.32 and 66,355.20

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Solution

The fourth proportional to 116,656.32, 160,984.32 and 66,355.20 is: 91,569.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,656.32 : 160,984.32 = 66,355.20 : x
  2. Step 2: Convert to fraction form
    116,656.32/160,984.32 = 66,355.20/x
  3. Step 3: Cross multiply
    116,656.32x = 160,984.32 × 66,355.20
  4. Step 4: Simplify right side
    116,656.32x = 10,682,146,750.46
  5. Step 5: Solve for x
    x = 10,682,146,750.46/116,656.32
  6. Step 6: Final answer
    x = 91,569.38

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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.