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Finding the Fourth Proportional to 9,904,910.40, 13,892,068.80 and 9,904,910.40

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Solution

The fourth proportional to 9,904,910.40, 13,892,068.80 and 9,904,910.40 is: 13,892,068.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,904,910.40 : 13,892,068.80 = 9,904,910.40 : x
  2. Step 2: Convert to fraction form
    9,904,910.40/13,892,068.80 = 9,904,910.40/x
  3. Step 3: Cross multiply
    9,904,910.40x = 13,892,068.80 × 9,904,910.40
  4. Step 4: Simplify right side
    9,904,910.40x = 137,599,696,734,635.53
  5. Step 5: Solve for x
    x = 137,599,696,734,635.53/9,904,910.40
  6. Step 6: Final answer
    x = 13,892,068.80

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1.5x scale

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.