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Finding the Fourth Proportional to 531,479,426.40, 797,219,139.60 and 531,479,426.40

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Solution

The fourth proportional to 531,479,426.40, 797,219,139.60 and 531,479,426.40 is: 797,219,139.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,479,426.40 : 797,219,139.60 = 531,479,426.40 : x
  2. Step 2: Convert to fraction form
    531,479,426.40/797,219,139.60 = 531,479,426.40/x
  3. Step 3: Cross multiply
    531,479,426.40x = 797,219,139.60 × 531,479,426.40
  4. Step 4: Simplify right side
    531,479,426.40x = 423,705,571,029,709,504
  5. Step 5: Solve for x
    x = 423,705,571,029,709,504/531,479,426.40
  6. Step 6: Final answer
    x = 797,219,139.60

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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.