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Finding the Fourth Proportional to 121,967.84, 182,918.88 and 43,071.68

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Solution

The fourth proportional to 121,967.84, 182,918.88 and 43,071.68 is: 64,595.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,967.84 : 182,918.88 = 43,071.68 : x
  2. Step 2: Convert to fraction form
    121,967.84/182,918.88 = 43,071.68/x
  3. Step 3: Cross multiply
    121,967.84x = 182,918.88 × 43,071.68
  4. Step 4: Simplify right side
    121,967.84x = 7,878,623,465.32
  5. Step 5: Solve for x
    x = 7,878,623,465.32/121,967.84
  6. Step 6: Final answer
    x = 64,595.91

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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.