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Finding the Fourth Proportional to 68,146.66, 94,041.72 and 37,931.50

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Solution

The fourth proportional to 68,146.66, 94,041.72 and 37,931.50 is: 52,345.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,146.66 : 94,041.72 = 37,931.50 : x
  2. Step 2: Convert to fraction form
    68,146.66/94,041.72 = 37,931.50/x
  3. Step 3: Cross multiply
    68,146.66x = 94,041.72 × 37,931.50
  4. Step 4: Simplify right side
    68,146.66x = 3,567,143,502.18
  5. Step 5: Solve for x
    x = 3,567,143,502.18/68,146.66
  6. Step 6: Final answer
    x = 52,345.10

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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.