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Finding the Fourth Proportional to 1,914,643.92, 2,642,658.87 and 1,190,038.89

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Solution

The fourth proportional to 1,914,643.92, 2,642,658.87 and 1,190,038.89 is: 1,642,533.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,914,643.92 : 2,642,658.87 = 1,190,038.89 : x
  2. Step 2: Convert to fraction form
    1,914,643.92/2,642,658.87 = 1,190,038.89/x
  3. Step 3: Cross multiply
    1,914,643.92x = 2,642,658.87 × 1,190,038.89
  4. Step 4: Simplify right side
    1,914,643.92x = 3,144,866,828,303.45
  5. Step 5: Solve for x
    x = 3,144,866,828,303.45/1,914,643.92
  6. Step 6: Final answer
    x = 1,642,533.53

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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.