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Finding the Fourth Proportional to 991,804.80, 1,369,041.60 and 589,392

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Solution

The fourth proportional to 991,804.80, 1,369,041.60 and 589,392 is: 813,569.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,804.80 : 1,369,041.60 = 589,392 : x
  2. Step 2: Convert to fraction form
    991,804.80/1,369,041.60 = 589,392/x
  3. Step 3: Cross multiply
    991,804.80x = 1,369,041.60 × 589,392
  4. Step 4: Simplify right side
    991,804.80x = 806,902,166,707.20
  5. Step 5: Solve for x
    x = 806,902,166,707.20/991,804.80
  6. Step 6: Final answer
    x = 813,569.53

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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.