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Finding the Fourth Proportional to 528,973,909.20, 793,460,863.80 and 528,973,909.20

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Solution

The fourth proportional to 528,973,909.20, 793,460,863.80 and 528,973,909.20 is: 793,460,863.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,973,909.20 : 793,460,863.80 = 528,973,909.20 : x
  2. Step 2: Convert to fraction form
    528,973,909.20/793,460,863.80 = 528,973,909.20/x
  3. Step 3: Cross multiply
    528,973,909.20x = 793,460,863.80 × 528,973,909.20
  4. Step 4: Simplify right side
    528,973,909.20x = 419,720,094,921,494,720
  5. Step 5: Solve for x
    x = 419,720,094,921,494,720/528,973,909.20
  6. Step 6: Final answer
    x = 793,460,863.80

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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.