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Finding the Fourth Proportional to 163,070.19, 225,039.15 and 98,530.47

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Solution

The fourth proportional to 163,070.19, 225,039.15 and 98,530.47 is: 135,973.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,070.19 : 225,039.15 = 98,530.47 : x
  2. Step 2: Convert to fraction form
    163,070.19/225,039.15 = 98,530.47/x
  3. Step 3: Cross multiply
    163,070.19x = 225,039.15 × 98,530.47
  4. Step 4: Simplify right side
    163,070.19x = 22,173,213,217.90
  5. Step 5: Solve for x
    x = 22,173,213,217.90/163,070.19
  6. Step 6: Final answer
    x = 135,973.43

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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.