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Finding the Fourth Proportional to 1,966,805.60, 2,708,478.72 and 1,708,564.64

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Solution

The fourth proportional to 1,966,805.60, 2,708,478.72 and 1,708,564.64 is: 2,352,856.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,966,805.60 : 2,708,478.72 = 1,708,564.64 : x
  2. Step 2: Convert to fraction form
    1,966,805.60/2,708,478.72 = 1,708,564.64/x
  3. Step 3: Cross multiply
    1,966,805.60x = 2,708,478.72 × 1,708,564.64
  4. Step 4: Simplify right side
    1,966,805.60x = 4,627,610,969,184.46
  5. Step 5: Solve for x
    x = 4,627,610,969,184.46/1,966,805.60
  6. Step 6: Final answer
    x = 2,352,856.31

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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.