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Finding the Fourth Proportional to 6,618,698.16, 9,928,073.16 and 4,374,337.20

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Solution

The fourth proportional to 6,618,698.16, 9,928,073.16 and 4,374,337.20 is: 6,561,522.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,618,698.16 : 9,928,073.16 = 4,374,337.20 : x
  2. Step 2: Convert to fraction form
    6,618,698.16/9,928,073.16 = 4,374,337.20/x
  3. Step 3: Cross multiply
    6,618,698.16x = 9,928,073.16 × 4,374,337.20
  4. Step 4: Simplify right side
    6,618,698.16x = 43,428,739,748,109.55
  5. Step 5: Solve for x
    x = 43,428,739,748,109.55/6,618,698.16
  6. Step 6: Final answer
    x = 6,561,522.93

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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.