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Finding the Fourth Proportional to 608,079,511.20, 912,119,266.80 and 608,079,511.20

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Solution

The fourth proportional to 608,079,511.20, 912,119,266.80 and 608,079,511.20 is: 912,119,266.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,079,511.20 : 912,119,266.80 = 608,079,511.20 : x
  2. Step 2: Convert to fraction form
    608,079,511.20/912,119,266.80 = 608,079,511.20/x
  3. Step 3: Cross multiply
    608,079,511.20x = 912,119,266.80 × 608,079,511.20
  4. Step 4: Simplify right side
    608,079,511.20x = 554,641,037,911,846,400
  5. Step 5: Solve for x
    x = 554,641,037,911,846,400/608,079,511.20
  6. Step 6: Final answer
    x = 912,119,266.80

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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.