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Finding the Fourth Proportional to 1,581,978.16, 2,372,949.42 and 383,913.64

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Solution

The fourth proportional to 1,581,978.16, 2,372,949.42 and 383,913.64 is: 575,866.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,581,978.16 : 2,372,949.42 = 383,913.64 : x
  2. Step 2: Convert to fraction form
    1,581,978.16/2,372,949.42 = 383,913.64/x
  3. Step 3: Cross multiply
    1,581,978.16x = 2,372,949.42 × 383,913.64
  4. Step 4: Simplify right side
    1,581,978.16x = 911,007,649,368.09
  5. Step 5: Solve for x
    x = 911,007,649,368.09/1,581,978.16
  6. Step 6: Final answer
    x = 575,866.14

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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.