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Finding the Fourth Proportional to 1,889,581.14, 2,606,798.88 and 1,200,883.86

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Solution

The fourth proportional to 1,889,581.14, 2,606,798.88 and 1,200,883.86 is: 1,656,696.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,889,581.14 : 2,606,798.88 = 1,200,883.86 : x
  2. Step 2: Convert to fraction form
    1,889,581.14/2,606,798.88 = 1,200,883.86/x
  3. Step 3: Cross multiply
    1,889,581.14x = 2,606,798.88 × 1,200,883.86
  4. Step 4: Simplify right side
    1,889,581.14x = 3,130,462,701,258.08
  5. Step 5: Solve for x
    x = 3,130,462,701,258.08/1,889,581.14
  6. Step 6: Final answer
    x = 1,656,696.63

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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.