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Finding the Fourth Proportional to 1,070,603.40, 1,605,905.10 and 1,054,014.60

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Solution

The fourth proportional to 1,070,603.40, 1,605,905.10 and 1,054,014.60 is: 1,581,021.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,070,603.40 : 1,605,905.10 = 1,054,014.60 : x
  2. Step 2: Convert to fraction form
    1,070,603.40/1,605,905.10 = 1,054,014.60/x
  3. Step 3: Cross multiply
    1,070,603.40x = 1,605,905.10 × 1,054,014.60
  4. Step 4: Simplify right side
    1,070,603.40x = 1,692,647,421,614.46
  5. Step 5: Solve for x
    x = 1,692,647,421,614.46/1,070,603.40
  6. Step 6: Final answer
    x = 1,581,021.90

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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.