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Finding the Fourth Proportional to 70,490.94, 97,277.31 and 40,285.64

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Solution

The fourth proportional to 70,490.94, 97,277.31 and 40,285.64 is: 55,594.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,490.94 : 97,277.31 = 40,285.64 : x
  2. Step 2: Convert to fraction form
    70,490.94/97,277.31 = 40,285.64/x
  3. Step 3: Cross multiply
    70,490.94x = 97,277.31 × 40,285.64
  4. Step 4: Simplify right side
    70,490.94x = 3,918,878,246.21
  5. Step 5: Solve for x
    x = 3,918,878,246.21/70,490.94
  6. Step 6: Final answer
    x = 55,594.07

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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.