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Finding the Fourth Proportional to 543,960.65, 815,916.06 and 189,002.45

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Solution

The fourth proportional to 543,960.65, 815,916.06 and 189,002.45 is: 283,495.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,960.65 : 815,916.06 = 189,002.45 : x
  2. Step 2: Convert to fraction form
    543,960.65/815,916.06 = 189,002.45/x
  3. Step 3: Cross multiply
    543,960.65x = 815,916.06 × 189,002.45
  4. Step 4: Simplify right side
    543,960.65x = 154,210,130,254.77
  5. Step 5: Solve for x
    x = 154,210,130,254.77/543,960.65
  6. Step 6: Final answer
    x = 283,495.01

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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.