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Finding the Fourth Proportional to 99,626, 137,482.99 and 54,303.98

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Solution

The fourth proportional to 99,626, 137,482.99 and 54,303.98 is: 74,939.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,626 : 137,482.99 = 54,303.98 : x
  2. Step 2: Convert to fraction form
    99,626/137,482.99 = 54,303.98/x
  3. Step 3: Cross multiply
    99,626x = 137,482.99 × 54,303.98
  4. Step 4: Simplify right side
    99,626x = 7,465,873,539.30
  5. Step 5: Solve for x
    x = 7,465,873,539.30/99,626
  6. Step 6: Final answer
    x = 74,939.01

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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.