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Finding the Fourth Proportional to 663,896,280.60, 930,815,281.80 and 663,896,280.60

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Solution

The fourth proportional to 663,896,280.60, 930,815,281.80 and 663,896,280.60 is: 930,815,281.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,896,280.60 : 930,815,281.80 = 663,896,280.60 : x
  2. Step 2: Convert to fraction form
    663,896,280.60/930,815,281.80 = 663,896,280.60/x
  3. Step 3: Cross multiply
    663,896,280.60x = 930,815,281.80 × 663,896,280.60
  4. Step 4: Simplify right side
    663,896,280.60x = 617,964,803,512,660,864
  5. Step 5: Solve for x
    x = 617,964,803,512,660,864/663,896,280.60
  6. Step 6: Final answer
    x = 930,815,281.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.