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Finding the Fourth Proportional to 153,663.91, 211,964.81 and 119,618.51

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Solution

The fourth proportional to 153,663.91, 211,964.81 and 119,618.51 is: 165,002.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,663.91 : 211,964.81 = 119,618.51 : x
  2. Step 2: Convert to fraction form
    153,663.91/211,964.81 = 119,618.51/x
  3. Step 3: Cross multiply
    153,663.91x = 211,964.81 × 119,618.51
  4. Step 4: Simplify right side
    153,663.91x = 25,354,913,086.72
  5. Step 5: Solve for x
    x = 25,354,913,086.72/153,663.91
  6. Step 6: Final answer
    x = 165,002.40

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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.