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Finding the Fourth Proportional to 153,721.94, 212,055.62 and 125,073.62

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Solution

The fourth proportional to 153,721.94, 212,055.62 and 125,073.62 is: 172,535.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,721.94 : 212,055.62 = 125,073.62 : x
  2. Step 2: Convert to fraction form
    153,721.94/212,055.62 = 125,073.62/x
  3. Step 3: Cross multiply
    153,721.94x = 212,055.62 × 125,073.62
  4. Step 4: Simplify right side
    153,721.94x = 26,522,563,939.52
  5. Step 5: Solve for x
    x = 26,522,563,939.52/153,721.94
  6. Step 6: Final answer
    x = 172,535.97

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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.