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Finding the Fourth Proportional to 111,030.62, 153,231.08 and 70,762.46

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Solution

The fourth proportional to 111,030.62, 153,231.08 and 70,762.46 is: 97,657.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,030.62 : 153,231.08 = 70,762.46 : x
  2. Step 2: Convert to fraction form
    111,030.62/153,231.08 = 70,762.46/x
  3. Step 3: Cross multiply
    111,030.62x = 153,231.08 × 70,762.46
  4. Step 4: Simplify right side
    111,030.62x = 10,843,007,049.29
  5. Step 5: Solve for x
    x = 10,843,007,049.29/111,030.62
  6. Step 6: Final answer
    x = 97,657.81

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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.