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Finding the Fourth Proportional to 103,628.94, 155,180.88 and 64,066.08

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Solution

The fourth proportional to 103,628.94, 155,180.88 and 64,066.08 is: 95,936.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,628.94 : 155,180.88 = 64,066.08 : x
  2. Step 2: Convert to fraction form
    103,628.94/155,180.88 = 64,066.08/x
  3. Step 3: Cross multiply
    103,628.94x = 155,180.88 × 64,066.08
  4. Step 4: Simplify right side
    103,628.94x = 9,941,830,672.55
  5. Step 5: Solve for x
    x = 9,941,830,672.55/103,628.94
  6. Step 6: Final answer
    x = 95,936.82

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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.