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Finding the Fourth Proportional to 153,090.84, 210,953.78 and 118,424.97

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Solution

The fourth proportional to 153,090.84, 210,953.78 and 118,424.97 is: 163,185.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,090.84 : 210,953.78 = 118,424.97 : x
  2. Step 2: Convert to fraction form
    153,090.84/210,953.78 = 118,424.97/x
  3. Step 3: Cross multiply
    153,090.84x = 210,953.78 × 118,424.97
  4. Step 4: Simplify right side
    153,090.84x = 24,982,194,475.76
  5. Step 5: Solve for x
    x = 24,982,194,475.76/153,090.84
  6. Step 6: Final answer
    x = 163,185.43

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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.