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Finding the Fourth Proportional to 905,667,070.80, 1,358,500,606.20 and 905,667,070.80

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Solution

The fourth proportional to 905,667,070.80, 1,358,500,606.20 and 905,667,070.80 is: 1,358,500,606.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,667,070.80 : 1,358,500,606.20 = 905,667,070.80 : x
  2. Step 2: Convert to fraction form
    905,667,070.80/1,358,500,606.20 = 905,667,070.80/x
  3. Step 3: Cross multiply
    905,667,070.80x = 1,358,500,606.20 × 905,667,070.80
  4. Step 4: Simplify right side
    905,667,070.80x = 1,230,349,264,697,178,368
  5. Step 5: Solve for x
    x = 1,230,349,264,697,178,368/905,667,070.80
  6. Step 6: Final answer
    x = 1,358,500,606.20

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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.