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Finding the Fourth Proportional to 905,430,000.60, 1,358,145,000.90 and 905,430,000.60

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Solution

The fourth proportional to 905,430,000.60, 1,358,145,000.90 and 905,430,000.60 is: 1,358,145,000.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,430,000.60 : 1,358,145,000.90 = 905,430,000.60 : x
  2. Step 2: Convert to fraction form
    905,430,000.60/1,358,145,000.90 = 905,430,000.60/x
  3. Step 3: Cross multiply
    905,430,000.60x = 1,358,145,000.90 × 905,430,000.60
  4. Step 4: Simplify right side
    905,430,000.60x = 1,229,705,228,979,774,208
  5. Step 5: Solve for x
    x = 1,229,705,228,979,774,208/905,430,000.60
  6. Step 6: Final answer
    x = 1,358,145,000.90

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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.