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Finding the Fourth Proportional to 1,174,962.88, 1,621,444.80 and 665,762.32

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Solution

The fourth proportional to 1,174,962.88, 1,621,444.80 and 665,762.32 is: 918,749.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,174,962.88 : 1,621,444.80 = 665,762.32 : x
  2. Step 2: Convert to fraction form
    1,174,962.88/1,621,444.80 = 665,762.32/x
  3. Step 3: Cross multiply
    1,174,962.88x = 1,621,444.80 × 665,762.32
  4. Step 4: Simplify right side
    1,174,962.88x = 1,079,496,851,799.94
  5. Step 5: Solve for x
    x = 1,079,496,851,799.94/1,174,962.88
  6. Step 6: Final answer
    x = 918,749.75

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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.