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Finding the Fourth Proportional to 263,358, 395,041.68 and 85,864.32

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Solution

The fourth proportional to 263,358, 395,041.68 and 85,864.32 is: 128,798.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,358 : 395,041.68 = 85,864.32 : x
  2. Step 2: Convert to fraction form
    263,358/395,041.68 = 85,864.32/x
  3. Step 3: Cross multiply
    263,358x = 395,041.68 × 85,864.32
  4. Step 4: Simplify right side
    263,358x = 33,919,985,224.86
  5. Step 5: Solve for x
    x = 33,919,985,224.86/263,358
  6. Step 6: Final answer
    x = 128,798.01

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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.