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Finding the Fourth Proportional to 1,574,136.90, 2,207,990.70 and 1,574,136.90

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Solution

The fourth proportional to 1,574,136.90, 2,207,990.70 and 1,574,136.90 is: 2,207,990.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,574,136.90 : 2,207,990.70 = 1,574,136.90 : x
  2. Step 2: Convert to fraction form
    1,574,136.90/2,207,990.70 = 1,574,136.90/x
  3. Step 3: Cross multiply
    1,574,136.90x = 2,207,990.70 × 1,574,136.90
  4. Step 4: Simplify right side
    1,574,136.90x = 3,475,679,635,726.83
  5. Step 5: Solve for x
    x = 3,475,679,635,726.83/1,574,136.90
  6. Step 6: Final answer
    x = 2,207,990.70

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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.