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Finding the Fourth Proportional to 991,797.86, 1,368,654 and 562,117.88

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Solution

The fourth proportional to 991,797.86, 1,368,654 and 562,117.88 is: 775,707.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,797.86 : 1,368,654 = 562,117.88 : x
  2. Step 2: Convert to fraction form
    991,797.86/1,368,654 = 562,117.88/x
  3. Step 3: Cross multiply
    991,797.86x = 1,368,654 × 562,117.88
  4. Step 4: Simplify right side
    991,797.86x = 769,344,884,933.52
  5. Step 5: Solve for x
    x = 769,344,884,933.52/991,797.86
  6. Step 6: Final answer
    x = 775,707.35

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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.