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Finding the Fourth Proportional to 561,656.60, 842,484.90 and 162,310.40

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Solution

The fourth proportional to 561,656.60, 842,484.90 and 162,310.40 is: 243,465.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,656.60 : 842,484.90 = 162,310.40 : x
  2. Step 2: Convert to fraction form
    561,656.60/842,484.90 = 162,310.40/x
  3. Step 3: Cross multiply
    561,656.60x = 842,484.90 × 162,310.40
  4. Step 4: Simplify right side
    561,656.60x = 136,744,061,112.96
  5. Step 5: Solve for x
    x = 136,744,061,112.96/561,656.60
  6. Step 6: Final answer
    x = 243,465.60

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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.