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Finding the Fourth Proportional to 173,685.80, 260,528.70 and 162,021.80

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Solution

The fourth proportional to 173,685.80, 260,528.70 and 162,021.80 is: 243,032.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,685.80 : 260,528.70 = 162,021.80 : x
  2. Step 2: Convert to fraction form
    173,685.80/260,528.70 = 162,021.80/x
  3. Step 3: Cross multiply
    173,685.80x = 260,528.70 × 162,021.80
  4. Step 4: Simplify right side
    173,685.80x = 42,211,328,925.66
  5. Step 5: Solve for x
    x = 42,211,328,925.66/173,685.80
  6. Step 6: Final answer
    x = 243,032.70

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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.