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Finding the Fourth Proportional to 675,490,687.56, 931,696,608.96 and 619,915,576.68

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Solution

The fourth proportional to 675,490,687.56, 931,696,608.96 and 619,915,576.68 is: 855,042,491.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    675,490,687.56 : 931,696,608.96 = 619,915,576.68 : x
  2. Step 2: Convert to fraction form
    675,490,687.56/931,696,608.96 = 619,915,576.68/x
  3. Step 3: Cross multiply
    675,490,687.56x = 931,696,608.96 × 619,915,576.68
  4. Step 4: Simplify right side
    675,490,687.56x = 577,573,240,634,238,848
  5. Step 5: Solve for x
    x = 577,573,240,634,238,848/675,490,687.56
  6. Step 6: Final answer
    x = 855,042,491.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.