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Finding the Fourth Proportional to 316,503.42, 474,680.62 and 91,804.56

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Solution

The fourth proportional to 316,503.42, 474,680.62 and 91,804.56 is: 137,685.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,503.42 : 474,680.62 = 91,804.56 : x
  2. Step 2: Convert to fraction form
    316,503.42/474,680.62 = 91,804.56/x
  3. Step 3: Cross multiply
    316,503.42x = 474,680.62 × 91,804.56
  4. Step 4: Simplify right side
    316,503.42x = 43,577,845,459.63
  5. Step 5: Solve for x
    x = 43,577,845,459.63/316,503.42
  6. Step 6: Final answer
    x = 137,685.23

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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.