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Finding the Fourth Proportional to 977,584.90, 1,370,485.10 and 977,584.90

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Solution

The fourth proportional to 977,584.90, 1,370,485.10 and 977,584.90 is: 1,370,485.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,584.90 : 1,370,485.10 = 977,584.90 : x
  2. Step 2: Convert to fraction form
    977,584.90/1,370,485.10 = 977,584.90/x
  3. Step 3: Cross multiply
    977,584.90x = 1,370,485.10 × 977,584.90
  4. Step 4: Simplify right side
    977,584.90x = 1,339,765,539,434.99
  5. Step 5: Solve for x
    x = 1,339,765,539,434.99/977,584.90
  6. Step 6: Final answer
    x = 1,370,485.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.