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Finding the Fourth Proportional to 755,722.80, 1,130,959.80 and 519,526.80

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Solution

The fourth proportional to 755,722.80, 1,130,959.80 and 519,526.80 is: 777,486.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    755,722.80 : 1,130,959.80 = 519,526.80 : x
  2. Step 2: Convert to fraction form
    755,722.80/1,130,959.80 = 519,526.80/x
  3. Step 3: Cross multiply
    755,722.80x = 1,130,959.80 × 519,526.80
  4. Step 4: Simplify right side
    755,722.80x = 587,563,925,822.64
  5. Step 5: Solve for x
    x = 587,563,925,822.64/755,722.80
  6. Step 6: Final answer
    x = 777,486.04

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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.