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Finding the Fourth Proportional to 19,315,853,834.40, 28,973,780,751.60 and 19,315,853,834.40

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Solution

The fourth proportional to 19,315,853,834.40, 28,973,780,751.60 and 19,315,853,834.40 is: 28,973,780,751.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,315,853,834.40 : 28,973,780,751.60 = 19,315,853,834.40 : x
  2. Step 2: Convert to fraction form
    19,315,853,834.40/28,973,780,751.60 = 19,315,853,834.40/x
  3. Step 3: Cross multiply
    19,315,853,834.40x = 28,973,780,751.60 × 19,315,853,834.40
  4. Step 4: Simplify right side
    19,315,853,834.40x = 559,653,314,027,857,772,544
  5. Step 5: Solve for x
    x = 559,653,314,027,857,772,544/19,315,853,834.40
  6. Step 6: Final answer
    x = 28,973,780,751.60

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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.