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Finding the Fourth Proportional to 612,665.07, 918,998.01 and 191,973.75

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Solution

The fourth proportional to 612,665.07, 918,998.01 and 191,973.75 is: 287,960.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,665.07 : 918,998.01 = 191,973.75 : x
  2. Step 2: Convert to fraction form
    612,665.07/918,998.01 = 191,973.75/x
  3. Step 3: Cross multiply
    612,665.07x = 918,998.01 × 191,973.75
  4. Step 4: Simplify right side
    612,665.07x = 176,423,494,222.24
  5. Step 5: Solve for x
    x = 176,423,494,222.24/612,665.07
  6. Step 6: Final answer
    x = 287,960.75

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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.