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Finding the Fourth Proportional to 153,807.66, 212,248.35 and 89,278.20

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Solution

The fourth proportional to 153,807.66, 212,248.35 and 89,278.20 is: 123,200.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,807.66 : 212,248.35 = 89,278.20 : x
  2. Step 2: Convert to fraction form
    153,807.66/212,248.35 = 89,278.20/x
  3. Step 3: Cross multiply
    153,807.66x = 212,248.35 × 89,278.20
  4. Step 4: Simplify right side
    153,807.66x = 18,949,150,640.97
  5. Step 5: Solve for x
    x = 18,949,150,640.97/153,807.66
  6. Step 6: Final answer
    x = 123,200.31

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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.