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Finding the Fourth Proportional to 117,412.99, 162,030.41 and 63,698.40

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Solution

The fourth proportional to 117,412.99, 162,030.41 and 63,698.40 is: 87,904.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,412.99 : 162,030.41 = 63,698.40 : x
  2. Step 2: Convert to fraction form
    117,412.99/162,030.41 = 63,698.40/x
  3. Step 3: Cross multiply
    117,412.99x = 162,030.41 × 63,698.40
  4. Step 4: Simplify right side
    117,412.99x = 10,321,076,739.70
  5. Step 5: Solve for x
    x = 10,321,076,739.70/117,412.99
  6. Step 6: Final answer
    x = 87,904.05

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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.