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Finding the Fourth Proportional to 2,435,985.80, 3,653,978.70 and 753,259.40

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Solution

The fourth proportional to 2,435,985.80, 3,653,978.70 and 753,259.40 is: 1,129,889.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,435,985.80 : 3,653,978.70 = 753,259.40 : x
  2. Step 2: Convert to fraction form
    2,435,985.80/3,653,978.70 = 753,259.40/x
  3. Step 3: Cross multiply
    2,435,985.80x = 3,653,978.70 × 753,259.40
  4. Step 4: Simplify right side
    2,435,985.80x = 2,752,393,803,174.78
  5. Step 5: Solve for x
    x = 2,752,393,803,174.78/2,435,985.80
  6. Step 6: Final answer
    x = 1,129,889.10

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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.