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Finding the Fourth Proportional to 977,573.40, 1,370,469 and 977,573.40

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Solution

The fourth proportional to 977,573.40, 1,370,469 and 977,573.40 is: 1,370,469

Step by Step Solution

  1. Step 1: Write the proportion equation
    977,573.40 : 1,370,469 = 977,573.40 : x
  2. Step 2: Convert to fraction form
    977,573.40/1,370,469 = 977,573.40/x
  3. Step 3: Cross multiply
    977,573.40x = 1,370,469 × 977,573.40
  4. Step 4: Simplify right side
    977,573.40x = 1,339,734,039,924.60
  5. Step 5: Solve for x
    x = 1,339,734,039,924.60/977,573.40
  6. Step 6: Final answer
    x = 1,370,469

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1.5x scale

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.