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Finding the Fourth Proportional to 3,129,000.10, 4,386,898.70 and 3,129,000.10

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Solution

The fourth proportional to 3,129,000.10, 4,386,898.70 and 3,129,000.10 is: 4,386,898.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,129,000.10 : 4,386,898.70 = 3,129,000.10 : x
  2. Step 2: Convert to fraction form
    3,129,000.10/4,386,898.70 = 3,129,000.10/x
  3. Step 3: Cross multiply
    3,129,000.10x = 4,386,898.70 × 3,129,000.10
  4. Step 4: Simplify right side
    3,129,000.10x = 13,726,606,470,989.87
  5. Step 5: Solve for x
    x = 13,726,606,470,989.87/3,129,000.10
  6. Step 6: Final answer
    x = 4,386,898.70

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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.