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Finding the Fourth Proportional to 1,641,798.16, 2,265,659.45 and 916,657

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Solution

The fourth proportional to 1,641,798.16, 2,265,659.45 and 916,657 is: 1,264,974.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,641,798.16 : 2,265,659.45 = 916,657 : x
  2. Step 2: Convert to fraction form
    1,641,798.16/2,265,659.45 = 916,657/x
  3. Step 3: Cross multiply
    1,641,798.16x = 2,265,659.45 × 916,657
  4. Step 4: Simplify right side
    1,641,798.16x = 2,076,832,589,875.36
  5. Step 5: Solve for x
    x = 2,076,832,589,875.36/1,641,798.16
  6. Step 6: Final answer
    x = 1,264,974.37

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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.