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Finding the Fourth Proportional to 64,913.90, 89,628.63 and 41,957.30

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Solution

The fourth proportional to 64,913.90, 89,628.63 and 41,957.30 is: 57,931.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,913.90 : 89,628.63 = 41,957.30 : x
  2. Step 2: Convert to fraction form
    64,913.90/89,628.63 = 41,957.30/x
  3. Step 3: Cross multiply
    64,913.90x = 89,628.63 × 41,957.30
  4. Step 4: Simplify right side
    64,913.90x = 3,760,575,384.23
  5. Step 5: Solve for x
    x = 3,760,575,384.23/64,913.90
  6. Step 6: Final answer
    x = 57,931.75

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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.