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Finding the Fourth Proportional to 520,808.01, 781,274.45 and 183,779.07

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Solution

The fourth proportional to 520,808.01, 781,274.45 and 183,779.07 is: 275,690.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,808.01 : 781,274.45 = 183,779.07 : x
  2. Step 2: Convert to fraction form
    520,808.01/781,274.45 = 183,779.07/x
  3. Step 3: Cross multiply
    520,808.01x = 781,274.45 × 183,779.07
  4. Step 4: Simplify right side
    520,808.01x = 143,581,890,916.87
  5. Step 5: Solve for x
    x = 143,581,890,916.87/520,808.01
  6. Step 6: Final answer
    x = 275,690.63

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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.