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Finding the Fourth Proportional to 524,641,158.60, 786,961,737.90 and 217,775,315.40

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Solution

The fourth proportional to 524,641,158.60, 786,961,737.90 and 217,775,315.40 is: 326,662,973.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,641,158.60 : 786,961,737.90 = 217,775,315.40 : x
  2. Step 2: Convert to fraction form
    524,641,158.60/786,961,737.90 = 217,775,315.40/x
  3. Step 3: Cross multiply
    524,641,158.60x = 786,961,737.90 × 217,775,315.40
  4. Step 4: Simplify right side
    524,641,158.60x = 171,380,840,678,904,640
  5. Step 5: Solve for x
    x = 171,380,840,678,904,640/524,641,158.60
  6. Step 6: Final answer
    x = 326,662,973.10

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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.