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Finding the Fourth Proportional to 99,574.60, 137,406.54 and 59,291.32

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Solution

The fourth proportional to 99,574.60, 137,406.54 and 59,291.32 is: 81,818.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,574.60 : 137,406.54 = 59,291.32 : x
  2. Step 2: Convert to fraction form
    99,574.60/137,406.54 = 59,291.32/x
  3. Step 3: Cross multiply
    99,574.60x = 137,406.54 × 59,291.32
  4. Step 4: Simplify right side
    99,574.60x = 8,147,015,133.23
  5. Step 5: Solve for x
    x = 8,147,015,133.23/99,574.60
  6. Step 6: Final answer
    x = 81,818.21

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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.