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Finding the Fourth Proportional to 47,068.64, 64,961.52 and 28,207.52

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Solution

The fourth proportional to 47,068.64, 64,961.52 and 28,207.52 is: 38,930.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,068.64 : 64,961.52 = 28,207.52 : x
  2. Step 2: Convert to fraction form
    47,068.64/64,961.52 = 28,207.52/x
  3. Step 3: Cross multiply
    47,068.64x = 64,961.52 × 28,207.52
  4. Step 4: Simplify right side
    47,068.64x = 1,832,403,374.63
  5. Step 5: Solve for x
    x = 1,832,403,374.63/47,068.64
  6. Step 6: Final answer
    x = 38,930.45

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.