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Finding the Fourth Proportional to 153,894.28, 212,462.46 and 117,308.51

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Solution

The fourth proportional to 153,894.28, 212,462.46 and 117,308.51 is: 161,953.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,894.28 : 212,462.46 = 117,308.51 : x
  2. Step 2: Convert to fraction form
    153,894.28/212,462.46 = 117,308.51/x
  3. Step 3: Cross multiply
    153,894.28x = 212,462.46 × 117,308.51
  4. Step 4: Simplify right side
    153,894.28x = 24,923,654,613.53
  5. Step 5: Solve for x
    x = 24,923,654,613.53/153,894.28
  6. Step 6: Final answer
    x = 161,953.09

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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.