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Finding the Fourth Proportional to 1,312,455.60, 1,838,682 and 1,312,455.60

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Solution

The fourth proportional to 1,312,455.60, 1,838,682 and 1,312,455.60 is: 1,838,682

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,455.60 : 1,838,682 = 1,312,455.60 : x
  2. Step 2: Convert to fraction form
    1,312,455.60/1,838,682 = 1,312,455.60/x
  3. Step 3: Cross multiply
    1,312,455.60x = 1,838,682 × 1,312,455.60
  4. Step 4: Simplify right side
    1,312,455.60x = 2,413,188,487,519.20
  5. Step 5: Solve for x
    x = 2,413,188,487,519.20/1,312,455.60
  6. Step 6: Final answer
    x = 1,838,682

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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.