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Finding the Fourth Proportional to 626,389,618.40, 939,584,427.60 and 626,389,618.40

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Solution

The fourth proportional to 626,389,618.40, 939,584,427.60 and 626,389,618.40 is: 939,584,427.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,389,618.40 : 939,584,427.60 = 626,389,618.40 : x
  2. Step 2: Convert to fraction form
    626,389,618.40/939,584,427.60 = 626,389,618.40/x
  3. Step 3: Cross multiply
    626,389,618.40x = 939,584,427.60 × 626,389,618.40
  4. Step 4: Simplify right side
    626,389,618.40x = 588,545,931,058,946,432
  5. Step 5: Solve for x
    x = 588,545,931,058,946,432/626,389,618.40
  6. Step 6: Final answer
    x = 939,584,427.60

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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.