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Finding the Fourth Proportional to 978,266.20, 1,467,399.30 and 710,577.40

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Solution

The fourth proportional to 978,266.20, 1,467,399.30 and 710,577.40 is: 1,065,866.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,266.20 : 1,467,399.30 = 710,577.40 : x
  2. Step 2: Convert to fraction form
    978,266.20/1,467,399.30 = 710,577.40/x
  3. Step 3: Cross multiply
    978,266.20x = 1,467,399.30 × 710,577.40
  4. Step 4: Simplify right side
    978,266.20x = 1,042,700,779,355.82
  5. Step 5: Solve for x
    x = 1,042,700,779,355.82/978,266.20
  6. Step 6: Final answer
    x = 1,065,866.10

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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.