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Finding the Fourth Proportional to 207,039.18, 310,558.86 and 64,895.54

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Solution

The fourth proportional to 207,039.18, 310,558.86 and 64,895.54 is: 97,343.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,039.18 : 310,558.86 = 64,895.54 : x
  2. Step 2: Convert to fraction form
    207,039.18/310,558.86 = 64,895.54/x
  3. Step 3: Cross multiply
    207,039.18x = 310,558.86 × 64,895.54
  4. Step 4: Simplify right side
    207,039.18x = 20,153,883,368.69
  5. Step 5: Solve for x
    x = 20,153,883,368.69/207,039.18
  6. Step 6: Final answer
    x = 97,343.33

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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.