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Finding the Fourth Proportional to 1,346,784.51, 1,858,602.12 and 734,976.77

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Solution

The fourth proportional to 1,346,784.51, 1,858,602.12 and 734,976.77 is: 1,014,289.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,346,784.51 : 1,858,602.12 = 734,976.77 : x
  2. Step 2: Convert to fraction form
    1,346,784.51/1,858,602.12 = 734,976.77/x
  3. Step 3: Cross multiply
    1,346,784.51x = 1,858,602.12 × 734,976.77
  4. Step 4: Simplify right side
    1,346,784.51x = 1,366,029,379,197.87
  5. Step 5: Solve for x
    x = 1,366,029,379,197.87/1,346,784.51
  6. Step 6: Final answer
    x = 1,014,289.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.