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Finding the Fourth Proportional to 173,978.40, 260,967.60 and 49,320.48

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Solution

The fourth proportional to 173,978.40, 260,967.60 and 49,320.48 is: 73,980.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,978.40 : 260,967.60 = 49,320.48 : x
  2. Step 2: Convert to fraction form
    173,978.40/260,967.60 = 49,320.48/x
  3. Step 3: Cross multiply
    173,978.40x = 260,967.60 × 49,320.48
  4. Step 4: Simplify right side
    173,978.40x = 12,871,047,296.45
  5. Step 5: Solve for x
    x = 12,871,047,296.45/173,978.40
  6. Step 6: Final answer
    x = 73,980.72

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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.