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Finding the Fourth Proportional to 173,985.60, 260,978.55 and 47,626.90

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Solution

The fourth proportional to 173,985.60, 260,978.55 and 47,626.90 is: 71,440.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,985.60 : 260,978.55 = 47,626.90 : x
  2. Step 2: Convert to fraction form
    173,985.60/260,978.55 = 47,626.90/x
  3. Step 3: Cross multiply
    173,985.60x = 260,978.55 × 47,626.90
  4. Step 4: Simplify right side
    173,985.60x = 12,429,599,303.00
  5. Step 5: Solve for x
    x = 12,429,599,303.00/173,985.60
  6. Step 6: Final answer
    x = 71,440.39

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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.