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Finding the Fourth Proportional to 509,777.55, 764,616.76 and 154,794.64

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Solution

The fourth proportional to 509,777.55, 764,616.76 and 154,794.64 is: 232,176.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,777.55 : 764,616.76 = 154,794.64 : x
  2. Step 2: Convert to fraction form
    509,777.55/764,616.76 = 154,794.64/x
  3. Step 3: Cross multiply
    509,777.55x = 764,616.76 × 154,794.64
  4. Step 4: Simplify right side
    509,777.55x = 118,358,575,328.19
  5. Step 5: Solve for x
    x = 118,358,575,328.19/509,777.55
  6. Step 6: Final answer
    x = 232,176.91

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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.