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Finding the Fourth Proportional to 1,775,661.60, 2,663,686.80 and 1,719,674.40

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Solution

The fourth proportional to 1,775,661.60, 2,663,686.80 and 1,719,674.40 is: 2,579,699.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,775,661.60 : 2,663,686.80 = 1,719,674.40 : x
  2. Step 2: Convert to fraction form
    1,775,661.60/2,663,686.80 = 1,719,674.40/x
  3. Step 3: Cross multiply
    1,775,661.60x = 2,663,686.80 × 1,719,674.40
  4. Step 4: Simplify right side
    1,775,661.60x = 4,580,673,999,577.92
  5. Step 5: Solve for x
    x = 4,580,673,999,577.92/1,775,661.60
  6. Step 6: Final answer
    x = 2,579,699.87

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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.