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Finding the Fourth Proportional to 64,358.42, 88,818.74 and 35,679.28

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Solution

The fourth proportional to 64,358.42, 88,818.74 and 35,679.28 is: 49,239.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,358.42 : 88,818.74 = 35,679.28 : x
  2. Step 2: Convert to fraction form
    64,358.42/88,818.74 = 35,679.28/x
  3. Step 3: Cross multiply
    64,358.42x = 88,818.74 × 35,679.28
  4. Step 4: Simplify right side
    64,358.42x = 3,168,988,693.71
  5. Step 5: Solve for x
    x = 3,168,988,693.71/64,358.42
  6. Step 6: Final answer
    x = 49,239.69

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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.