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Finding the Fourth Proportional to 1,557,779.80, 2,184,041 and 1,557,779.80

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Solution

The fourth proportional to 1,557,779.80, 2,184,041 and 1,557,779.80 is: 2,184,041

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557,779.80 : 2,184,041 = 1,557,779.80 : x
  2. Step 2: Convert to fraction form
    1,557,779.80/2,184,041 = 1,557,779.80/x
  3. Step 3: Cross multiply
    1,557,779.80x = 2,184,041 × 1,557,779.80
  4. Step 4: Simplify right side
    1,557,779.80x = 3,402,254,952,171.80
  5. Step 5: Solve for x
    x = 3,402,254,952,171.80/1,557,779.80
  6. Step 6: Final answer
    x = 2,184,041

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.