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Finding the Fourth Proportional to 70,602.92, 105,904.65 and 49,636.81

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Solution

The fourth proportional to 70,602.92, 105,904.65 and 49,636.81 is: 74,455.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,602.92 : 105,904.65 = 49,636.81 : x
  2. Step 2: Convert to fraction form
    70,602.92/105,904.65 = 49,636.81/x
  3. Step 3: Cross multiply
    70,602.92x = 105,904.65 × 49,636.81
  4. Step 4: Simplify right side
    70,602.92x = 5,256,768,990.17
  5. Step 5: Solve for x
    x = 5,256,768,990.17/70,602.92
  6. Step 6: Final answer
    x = 74,455.40

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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.