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Finding the Fourth Proportional to 245,666.20, 368,693.70 and 95,978.20

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Solution

The fourth proportional to 245,666.20, 368,693.70 and 95,978.20 is: 144,043.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,666.20 : 368,693.70 = 95,978.20 : x
  2. Step 2: Convert to fraction form
    245,666.20/368,693.70 = 95,978.20/x
  3. Step 3: Cross multiply
    245,666.20x = 368,693.70 × 95,978.20
  4. Step 4: Simplify right side
    245,666.20x = 35,386,557,677.34
  5. Step 5: Solve for x
    x = 35,386,557,677.34/245,666.20
  6. Step 6: Final answer
    x = 144,043.25

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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.