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Finding the Fourth Proportional to 111,486.70, 153,848.46 and 60,497.20

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Solution

The fourth proportional to 111,486.70, 153,848.46 and 60,497.20 is: 83,484.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,486.70 : 153,848.46 = 60,497.20 : x
  2. Step 2: Convert to fraction form
    111,486.70/153,848.46 = 60,497.20/x
  3. Step 3: Cross multiply
    111,486.70x = 153,848.46 × 60,497.20
  4. Step 4: Simplify right side
    111,486.70x = 9,307,401,054.31
  5. Step 5: Solve for x
    x = 9,307,401,054.31/111,486.70
  6. Step 6: Final answer
    x = 83,484.41

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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.