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Finding the Fourth Proportional to 117,157.99, 175,700.64 and 42,268.40

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Solution

The fourth proportional to 117,157.99, 175,700.64 and 42,268.40 is: 63,389.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,157.99 : 175,700.64 = 42,268.40 : x
  2. Step 2: Convert to fraction form
    117,157.99/175,700.64 = 42,268.40/x
  3. Step 3: Cross multiply
    117,157.99x = 175,700.64 × 42,268.40
  4. Step 4: Simplify right side
    117,157.99x = 7,426,584,870.66
  5. Step 5: Solve for x
    x = 7,426,584,870.66/117,157.99
  6. Step 6: Final answer
    x = 63,389.49

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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.