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Finding the Fourth Proportional to 1,821,392.30, 2,553,681.70 and 1,821,392.30

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Solution

The fourth proportional to 1,821,392.30, 2,553,681.70 and 1,821,392.30 is: 2,553,681.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821,392.30 : 2,553,681.70 = 1,821,392.30 : x
  2. Step 2: Convert to fraction form
    1,821,392.30/2,553,681.70 = 1,821,392.30/x
  3. Step 3: Cross multiply
    1,821,392.30x = 2,553,681.70 × 1,821,392.30
  4. Step 4: Simplify right side
    1,821,392.30x = 4,651,256,185,030.91
  5. Step 5: Solve for x
    x = 4,651,256,185,030.91/1,821,392.30
  6. Step 6: Final answer
    x = 2,553,681.70

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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.