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Finding the Fourth Proportional to 626,616,000.80, 939,924,001.20 and 626,616,000.80

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Solution

The fourth proportional to 626,616,000.80, 939,924,001.20 and 626,616,000.80 is: 939,924,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,616,000.80 : 939,924,001.20 = 626,616,000.80 : x
  2. Step 2: Convert to fraction form
    626,616,000.80/939,924,001.20 = 626,616,000.80/x
  3. Step 3: Cross multiply
    626,616,000.80x = 939,924,001.20 × 626,616,000.80
  4. Step 4: Simplify right side
    626,616,000.80x = 588,971,418,687,878,400
  5. Step 5: Solve for x
    x = 588,971,418,687,878,400/626,616,000.80
  6. Step 6: Final answer
    x = 939,924,001.20

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Similar ratio
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1.5x scale

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.