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Finding the Fourth Proportional to 92,574.64, 138,845.40 and 42,652.72

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Solution

The fourth proportional to 92,574.64, 138,845.40 and 42,652.72 is: 63,971.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,574.64 : 138,845.40 = 42,652.72 : x
  2. Step 2: Convert to fraction form
    92,574.64/138,845.40 = 42,652.72/x
  3. Step 3: Cross multiply
    92,574.64x = 138,845.40 × 42,652.72
  4. Step 4: Simplify right side
    92,574.64x = 5,922,133,969.49
  5. Step 5: Solve for x
    x = 5,922,133,969.49/92,574.64
  6. Step 6: Final answer
    x = 63,971.45

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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.