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Finding the Fourth Proportional to 1,858,509.51, 2,787,913.28 and 706,308.06

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Solution

The fourth proportional to 1,858,509.51, 2,787,913.28 and 706,308.06 is: 1,059,518.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,858,509.51 : 2,787,913.28 = 706,308.06 : x
  2. Step 2: Convert to fraction form
    1,858,509.51/2,787,913.28 = 706,308.06/x
  3. Step 3: Cross multiply
    1,858,509.51x = 2,787,913.28 × 706,308.06
  4. Step 4: Simplify right side
    1,858,509.51x = 1,969,125,620,245.04
  5. Step 5: Solve for x
    x = 1,969,125,620,245.04/1,858,509.51
  6. Step 6: Final answer
    x = 1,059,518.72

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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.