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Finding the Fourth Proportional to 326,210.70, 489,316.05 and 238,082.70

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Solution

The fourth proportional to 326,210.70, 489,316.05 and 238,082.70 is: 357,124.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,210.70 : 489,316.05 = 238,082.70 : x
  2. Step 2: Convert to fraction form
    326,210.70/489,316.05 = 238,082.70/x
  3. Step 3: Cross multiply
    326,210.70x = 489,316.05 × 238,082.70
  4. Step 4: Simplify right side
    326,210.70x = 116,497,686,337.34
  5. Step 5: Solve for x
    x = 116,497,686,337.34/326,210.70
  6. Step 6: Final answer
    x = 357,124.05

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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.