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Finding the Fourth Proportional to 316,059.13, 474,089.14 and 129,070.63

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Solution

The fourth proportional to 316,059.13, 474,089.14 and 129,070.63 is: 193,606.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,059.13 : 474,089.14 = 129,070.63 : x
  2. Step 2: Convert to fraction form
    316,059.13/474,089.14 = 129,070.63/x
  3. Step 3: Cross multiply
    316,059.13x = 474,089.14 × 129,070.63
  4. Step 4: Simplify right side
    316,059.13x = 61,190,983,975.96
  5. Step 5: Solve for x
    x = 61,190,983,975.96/316,059.13
  6. Step 6: Final answer
    x = 193,606.13

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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.