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Finding the Fourth Proportional to 528,064.65, 791,780.64 and 168,080.01

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Solution

The fourth proportional to 528,064.65, 791,780.64 and 168,080.01 is: 252,019.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,064.65 : 791,780.64 = 168,080.01 : x
  2. Step 2: Convert to fraction form
    528,064.65/791,780.64 = 168,080.01/x
  3. Step 3: Cross multiply
    528,064.65x = 791,780.64 × 168,080.01
  4. Step 4: Simplify right side
    528,064.65x = 133,082,497,889.01
  5. Step 5: Solve for x
    x = 133,082,497,889.01/528,064.65
  6. Step 6: Final answer
    x = 252,019.33

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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.