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Finding the Fourth Proportional to 153,967.36, 212,357.28 and 106,300.48

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Solution

The fourth proportional to 153,967.36, 212,357.28 and 106,300.48 is: 146,613.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,967.36 : 212,357.28 = 106,300.48 : x
  2. Step 2: Convert to fraction form
    153,967.36/212,357.28 = 106,300.48/x
  3. Step 3: Cross multiply
    153,967.36x = 212,357.28 × 106,300.48
  4. Step 4: Simplify right side
    153,967.36x = 22,573,680,795.49
  5. Step 5: Solve for x
    x = 22,573,680,795.49/153,967.36
  6. Step 6: Final answer
    x = 146,613.42

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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.