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Finding the Fourth Proportional to 611,967.60, 917,951.23 and 191,243.47

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Solution

The fourth proportional to 611,967.60, 917,951.23 and 191,243.47 is: 286,865.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,967.60 : 917,951.23 = 191,243.47 : x
  2. Step 2: Convert to fraction form
    611,967.60/917,951.23 = 191,243.47/x
  3. Step 3: Cross multiply
    611,967.60x = 917,951.23 × 191,243.47
  4. Step 4: Simplify right side
    611,967.60x = 175,552,178,515.97
  5. Step 5: Solve for x
    x = 175,552,178,515.97/611,967.60
  6. Step 6: Final answer
    x = 286,865.15

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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.