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Finding the Fourth Proportional to 103,091.80, 154,637.70 and 103,091.80

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Solution

The fourth proportional to 103,091.80, 154,637.70 and 103,091.80 is: 154,637.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,091.80 : 154,637.70 = 103,091.80 : x
  2. Step 2: Convert to fraction form
    103,091.80/154,637.70 = 103,091.80/x
  3. Step 3: Cross multiply
    103,091.80x = 154,637.70 × 103,091.80
  4. Step 4: Simplify right side
    103,091.80x = 15,941,878,840.86
  5. Step 5: Solve for x
    x = 15,941,878,840.86/103,091.80
  6. Step 6: Final answer
    x = 154,637.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.