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Finding the Fourth Proportional to 153,608.32, 211,983.98 and 89,940.16

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Solution

The fourth proportional to 153,608.32, 211,983.98 and 89,940.16 is: 124,120.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,608.32 : 211,983.98 = 89,940.16 : x
  2. Step 2: Convert to fraction form
    153,608.32/211,983.98 = 89,940.16/x
  3. Step 3: Cross multiply
    153,608.32x = 211,983.98 × 89,940.16
  4. Step 4: Simplify right side
    153,608.32x = 19,065,873,078.64
  5. Step 5: Solve for x
    x = 19,065,873,078.64/153,608.32
  6. Step 6: Final answer
    x = 124,120.05

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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.