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Finding the Fourth Proportional to 1,807,798.86, 2,495,931.09 and 1,120,200.39

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Solution

The fourth proportional to 1,807,798.86, 2,495,931.09 and 1,120,200.39 is: 1,546,600.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,807,798.86 : 2,495,931.09 = 1,120,200.39 : x
  2. Step 2: Convert to fraction form
    1,807,798.86/2,495,931.09 = 1,120,200.39/x
  3. Step 3: Cross multiply
    1,807,798.86x = 2,495,931.09 × 1,120,200.39
  4. Step 4: Simplify right side
    1,807,798.86x = 2,795,942,980,431.12
  5. Step 5: Solve for x
    x = 2,795,942,980,431.12/1,807,798.86
  6. Step 6: Final answer
    x = 1,546,600.70

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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.