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Finding the Fourth Proportional to 162,572.60, 243,383.70 and 115,916.60

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Solution

The fourth proportional to 162,572.60, 243,383.70 and 115,916.60 is: 173,536.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,572.60 : 243,383.70 = 115,916.60 : x
  2. Step 2: Convert to fraction form
    162,572.60/243,383.70 = 115,916.60/x
  3. Step 3: Cross multiply
    162,572.60x = 243,383.70 × 115,916.60
  4. Step 4: Simplify right side
    162,572.60x = 28,212,210,999.42
  5. Step 5: Solve for x
    x = 28,212,210,999.42/162,572.60
  6. Step 6: Final answer
    x = 173,536.08

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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.