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Finding the Fourth Proportional to 655,835,523, 905,052,254.76 and 358,479,718.08

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Solution

The fourth proportional to 655,835,523, 905,052,254.76 and 358,479,718.08 is: 494,701,591.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,835,523 : 905,052,254.76 = 358,479,718.08 : x
  2. Step 2: Convert to fraction form
    655,835,523/905,052,254.76 = 358,479,718.08/x
  3. Step 3: Cross multiply
    655,835,523x = 905,052,254.76 × 358,479,718.08
  4. Step 4: Simplify right side
    655,835,523x = 324,442,877,134,033,088
  5. Step 5: Solve for x
    x = 324,442,877,134,033,088/655,835,523
  6. Step 6: Final answer
    x = 494,701,591.72

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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.