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Finding the Fourth Proportional to 111,703.90, 154,100.01 and 98,970.07

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Solution

The fourth proportional to 111,703.90, 154,100.01 and 98,970.07 is: 136,533.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,703.90 : 154,100.01 = 98,970.07 : x
  2. Step 2: Convert to fraction form
    111,703.90/154,100.01 = 98,970.07/x
  3. Step 3: Cross multiply
    111,703.90x = 154,100.01 × 98,970.07
  4. Step 4: Simplify right side
    111,703.90x = 15,251,288,776.70
  5. Step 5: Solve for x
    x = 15,251,288,776.70/111,703.90
  6. Step 6: Final answer
    x = 136,533.18

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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.