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Finding the Fourth Proportional to 1,433,407.44, 1,978,102.56 and 788,827.62

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Solution

The fourth proportional to 1,433,407.44, 1,978,102.56 and 788,827.62 is: 1,088,582.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,433,407.44 : 1,978,102.56 = 788,827.62 : x
  2. Step 2: Convert to fraction form
    1,433,407.44/1,978,102.56 = 788,827.62/x
  3. Step 3: Cross multiply
    1,433,407.44x = 1,978,102.56 × 788,827.62
  4. Step 4: Simplify right side
    1,433,407.44x = 1,560,381,934,520.71
  5. Step 5: Solve for x
    x = 1,560,381,934,520.71/1,433,407.44
  6. Step 6: Final answer
    x = 1,088,582.28

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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.