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Finding the Fourth Proportional to 528,579, 792,985.14 and 196,155

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Solution

The fourth proportional to 528,579, 792,985.14 and 196,155 is: 294,275.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,579 : 792,985.14 = 196,155 : x
  2. Step 2: Convert to fraction form
    528,579/792,985.14 = 196,155/x
  3. Step 3: Cross multiply
    528,579x = 792,985.14 × 196,155
  4. Step 4: Simplify right side
    528,579x = 155,548,000,136.70
  5. Step 5: Solve for x
    x = 155,548,000,136.70/528,579
  6. Step 6: Final answer
    x = 294,275.78

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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.