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Finding the Fourth Proportional to 113,602.66, 156,772.32 and 65,884.36

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Solution

The fourth proportional to 113,602.66, 156,772.32 and 65,884.36 is: 90,920.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,602.66 : 156,772.32 = 65,884.36 : x
  2. Step 2: Convert to fraction form
    113,602.66/156,772.32 = 65,884.36/x
  3. Step 3: Cross multiply
    113,602.66x = 156,772.32 × 65,884.36
  4. Step 4: Simplify right side
    113,602.66x = 10,328,843,968.92
  5. Step 5: Solve for x
    x = 10,328,843,968.92/113,602.66
  6. Step 6: Final answer
    x = 90,920.79

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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.