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Finding the Fourth Proportional to 611,665.70, 917,498.54 and 190,977.62

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Solution

The fourth proportional to 611,665.70, 917,498.54 and 190,977.62 is: 286,466.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,665.70 : 917,498.54 = 190,977.62 : x
  2. Step 2: Convert to fraction form
    611,665.70/917,498.54 = 190,977.62/x
  3. Step 3: Cross multiply
    611,665.70x = 917,498.54 × 190,977.62
  4. Step 4: Simplify right side
    611,665.70x = 175,221,683,412.63
  5. Step 5: Solve for x
    x = 175,221,683,412.63/611,665.70
  6. Step 6: Final answer
    x = 286,466.42

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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.