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Finding the Fourth Proportional to 5,147,695.53, 7,721,598.38 and 1,553,494.68

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Solution

The fourth proportional to 5,147,695.53, 7,721,598.38 and 1,553,494.68 is: 2,330,258.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147,695.53 : 7,721,598.38 = 1,553,494.68 : x
  2. Step 2: Convert to fraction form
    5,147,695.53/7,721,598.38 = 1,553,494.68/x
  3. Step 3: Cross multiply
    5,147,695.53x = 7,721,598.38 × 1,553,494.68
  4. Step 4: Simplify right side
    5,147,695.53x = 11,995,461,996,659.14
  5. Step 5: Solve for x
    x = 11,995,461,996,659.14/5,147,695.53
  6. Step 6: Final answer
    x = 2,330,258.64

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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.