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Finding the Fourth Proportional to 20,854,493.40, 31,281,740.10 and 20,854,493.40

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Solution

The fourth proportional to 20,854,493.40, 31,281,740.10 and 20,854,493.40 is: 31,281,740.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,854,493.40 : 31,281,740.10 = 20,854,493.40 : x
  2. Step 2: Convert to fraction form
    20,854,493.40/31,281,740.10 = 20,854,493.40/x
  3. Step 3: Cross multiply
    20,854,493.40x = 31,281,740.10 × 20,854,493.40
  4. Step 4: Simplify right side
    20,854,493.40x = 652,364,842,455,965.38
  5. Step 5: Solve for x
    x = 652,364,842,455,965.38/20,854,493.40
  6. Step 6: Final answer
    x = 31,281,740.10

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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.