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Finding the Fourth Proportional to 1,007,883.03, 1,390,878.69 and 555,174.03

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Solution

The fourth proportional to 1,007,883.03, 1,390,878.69 and 555,174.03 is: 766,140.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,007,883.03 : 1,390,878.69 = 555,174.03 : x
  2. Step 2: Convert to fraction form
    1,007,883.03/1,390,878.69 = 555,174.03/x
  3. Step 3: Cross multiply
    1,007,883.03x = 1,390,878.69 × 555,174.03
  4. Step 4: Simplify right side
    1,007,883.03x = 772,179,727,568.42
  5. Step 5: Solve for x
    x = 772,179,727,568.42/1,007,883.03
  6. Step 6: Final answer
    x = 766,140.22

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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.