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Finding the Fourth Proportional to 1,319,822.86, 1,821,355.55 and 716,210.86

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Solution

The fourth proportional to 1,319,822.86, 1,821,355.55 and 716,210.86 is: 988,370.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319,822.86 : 1,821,355.55 = 716,210.86 : x
  2. Step 2: Convert to fraction form
    1,319,822.86/1,821,355.55 = 716,210.86/x
  3. Step 3: Cross multiply
    1,319,822.86x = 1,821,355.55 × 716,210.86
  4. Step 4: Simplify right side
    1,319,822.86x = 1,304,474,620,783.32
  5. Step 5: Solve for x
    x = 1,304,474,620,783.32/1,319,822.86
  6. Step 6: Final answer
    x = 988,370.99

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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.