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Finding the Fourth Proportional to 5,315,815.60, 7,973,723.40 and 5,315,815.60

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Solution

The fourth proportional to 5,315,815.60, 7,973,723.40 and 5,315,815.60 is: 7,973,723.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315,815.60 : 7,973,723.40 = 5,315,815.60 : x
  2. Step 2: Convert to fraction form
    5,315,815.60/7,973,723.40 = 5,315,815.60/x
  3. Step 3: Cross multiply
    5,315,815.60x = 7,973,723.40 × 5,315,815.60
  4. Step 4: Simplify right side
    5,315,815.60x = 42,386,843,239,805.04
  5. Step 5: Solve for x
    x = 42,386,843,239,805.04/5,315,815.60
  6. Step 6: Final answer
    x = 7,973,723.40

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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.