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Finding the Fourth Proportional to 653,249,845.80, 979,874,768.70 and 603,365,250.60

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Solution

The fourth proportional to 653,249,845.80, 979,874,768.70 and 603,365,250.60 is: 905,047,875.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,249,845.80 : 979,874,768.70 = 603,365,250.60 : x
  2. Step 2: Convert to fraction form
    653,249,845.80/979,874,768.70 = 603,365,250.60/x
  3. Step 3: Cross multiply
    653,249,845.80x = 979,874,768.70 × 603,365,250.60
  4. Step 4: Simplify right side
    653,249,845.80x = 591,222,385,373,292,544
  5. Step 5: Solve for x
    x = 591,222,385,373,292,544/653,249,845.80
  6. Step 6: Final answer
    x = 905,047,875.90

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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.