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Finding the Fourth Proportional to 611,666.70, 917,500.04 and 190,978.62

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Solution

The fourth proportional to 611,666.70, 917,500.04 and 190,978.62 is: 286,467.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,666.70 : 917,500.04 = 190,978.62 : x
  2. Step 2: Convert to fraction form
    611,666.70/917,500.04 = 190,978.62/x
  3. Step 3: Cross multiply
    611,666.70x = 917,500.04 × 190,978.62
  4. Step 4: Simplify right side
    611,666.70x = 175,222,891,489.15
  5. Step 5: Solve for x
    x = 175,222,891,489.15/611,666.70
  6. Step 6: Final answer
    x = 286,467.93

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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.