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Finding the Fourth Proportional to 1,055,866.02, 1,583,768 and 257,135.96

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Solution

The fourth proportional to 1,055,866.02, 1,583,768 and 257,135.96 is: 385,696.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,055,866.02 : 1,583,768 = 257,135.96 : x
  2. Step 2: Convert to fraction form
    1,055,866.02/1,583,768 = 257,135.96/x
  3. Step 3: Cross multiply
    1,055,866.02x = 1,583,768 × 257,135.96
  4. Step 4: Simplify right side
    1,055,866.02x = 407,243,705,097.28
  5. Step 5: Solve for x
    x = 407,243,705,097.28/1,055,866.02
  6. Step 6: Final answer
    x = 385,696.38

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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.