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Finding the Fourth Proportional to 19,920,030.30, 29,880,045.45 and 19,920,030.30

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Solution

The fourth proportional to 19,920,030.30, 29,880,045.45 and 19,920,030.30 is: 29,880,045.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,920,030.30 : 29,880,045.45 = 19,920,030.30 : x
  2. Step 2: Convert to fraction form
    19,920,030.30/29,880,045.45 = 19,920,030.30/x
  3. Step 3: Cross multiply
    19,920,030.30x = 29,880,045.45 × 19,920,030.30
  4. Step 4: Simplify right side
    19,920,030.30x = 595,211,410,729,377.12
  5. Step 5: Solve for x
    x = 595,211,410,729,377.12/19,920,030.30
  6. Step 6: Final answer
    x = 29,880,045.45

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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.