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Finding the Fourth Proportional to 118,659.84, 163,698.48 and 70,889.28

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Solution

The fourth proportional to 118,659.84, 163,698.48 and 70,889.28 is: 97,796.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,659.84 : 163,698.48 = 70,889.28 : x
  2. Step 2: Convert to fraction form
    118,659.84/163,698.48 = 70,889.28/x
  3. Step 3: Cross multiply
    118,659.84x = 163,698.48 × 70,889.28
  4. Step 4: Simplify right side
    118,659.84x = 11,604,467,384.29
  5. Step 5: Solve for x
    x = 11,604,467,384.29/118,659.84
  6. Step 6: Final answer
    x = 97,796.08

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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.