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Finding the Fourth Proportional to 173,643.90, 260,465.85 and 103,659.90

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Solution

The fourth proportional to 173,643.90, 260,465.85 and 103,659.90 is: 155,489.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,643.90 : 260,465.85 = 103,659.90 : x
  2. Step 2: Convert to fraction form
    173,643.90/260,465.85 = 103,659.90/x
  3. Step 3: Cross multiply
    173,643.90x = 260,465.85 × 103,659.90
  4. Step 4: Simplify right side
    173,643.90x = 26,999,863,964.42
  5. Step 5: Solve for x
    x = 26,999,863,964.42/173,643.90
  6. Step 6: Final answer
    x = 155,489.85

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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.