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Finding the Fourth Proportional to 173,620.90, 260,431.35 and 103,636.90

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Solution

The fourth proportional to 173,620.90, 260,431.35 and 103,636.90 is: 155,455.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,620.90 : 260,431.35 = 103,636.90 : x
  2. Step 2: Convert to fraction form
    173,620.90/260,431.35 = 103,636.90/x
  3. Step 3: Cross multiply
    173,620.90x = 260,431.35 × 103,636.90
  4. Step 4: Simplify right side
    173,620.90x = 26,990,297,776.82
  5. Step 5: Solve for x
    x = 26,990,297,776.82/173,620.90
  6. Step 6: Final answer
    x = 155,455.35

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1.5x scale

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.