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Finding the Fourth Proportional to 413,657.20, 579,907.40 and 413,657.20

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Solution

The fourth proportional to 413,657.20, 579,907.40 and 413,657.20 is: 579,907.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,657.20 : 579,907.40 = 413,657.20 : x
  2. Step 2: Convert to fraction form
    413,657.20/579,907.40 = 413,657.20/x
  3. Step 3: Cross multiply
    413,657.20x = 579,907.40 × 413,657.20
  4. Step 4: Simplify right side
    413,657.20x = 239,882,871,343.28
  5. Step 5: Solve for x
    x = 239,882,871,343.28/413,657.20
  6. Step 6: Final answer
    x = 579,907.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.