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Finding the Fourth Proportional to 792,643.60, 1,187,604.60 and 371,054.80

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Solution

The fourth proportional to 792,643.60, 1,187,604.60 and 371,054.80 is: 555,945.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    792,643.60 : 1,187,604.60 = 371,054.80 : x
  2. Step 2: Convert to fraction form
    792,643.60/1,187,604.60 = 371,054.80/x
  3. Step 3: Cross multiply
    792,643.60x = 1,187,604.60 × 371,054.80
  4. Step 4: Simplify right side
    792,643.60x = 440,666,387,332.08
  5. Step 5: Solve for x
    x = 440,666,387,332.08/792,643.60
  6. Step 6: Final answer
    x = 555,945.18

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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.