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Finding the Fourth Proportional to 385,598.07, 578,424.65 and 119,324.34

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Solution

The fourth proportional to 385,598.07, 578,424.65 and 119,324.34 is: 178,995.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,598.07 : 578,424.65 = 119,324.34 : x
  2. Step 2: Convert to fraction form
    385,598.07/578,424.65 = 119,324.34/x
  3. Step 3: Cross multiply
    385,598.07x = 578,424.65 × 119,324.34
  4. Step 4: Simplify right side
    385,598.07x = 69,020,139,004.36
  5. Step 5: Solve for x
    x = 69,020,139,004.36/385,598.07
  6. Step 6: Final answer
    x = 178,995.03

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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.