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Finding the Fourth Proportional to 158,490,042.30, 221,432,562.90 and 158,490,042.30

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Solution

The fourth proportional to 158,490,042.30, 221,432,562.90 and 158,490,042.30 is: 221,432,562.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,490,042.30 : 221,432,562.90 = 158,490,042.30 : x
  2. Step 2: Convert to fraction form
    158,490,042.30/221,432,562.90 = 158,490,042.30/x
  3. Step 3: Cross multiply
    158,490,042.30x = 221,432,562.90 × 158,490,042.30
  4. Step 4: Simplify right side
    158,490,042.30x = 35,094,856,260,618,416
  5. Step 5: Solve for x
    x = 35,094,856,260,618,416/158,490,042.30
  6. Step 6: Final answer
    x = 221,432,562.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.