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Finding the Fourth Proportional to 173,804.40, 260,560.80 and 90,698.40

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Solution

The fourth proportional to 173,804.40, 260,560.80 and 90,698.40 is: 135,971.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,804.40 : 260,560.80 = 90,698.40 : x
  2. Step 2: Convert to fraction form
    173,804.40/260,560.80 = 90,698.40/x
  3. Step 3: Cross multiply
    173,804.40x = 260,560.80 × 90,698.40
  4. Step 4: Simplify right side
    173,804.40x = 23,632,447,662.72
  5. Step 5: Solve for x
    x = 23,632,447,662.72/173,804.40
  6. Step 6: Final answer
    x = 135,971.52

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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.