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Finding the Fourth Proportional to 7,886,315.90, 11,070,702.10 and 7,886,315.90

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Solution

The fourth proportional to 7,886,315.90, 11,070,702.10 and 7,886,315.90 is: 11,070,702.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,886,315.90 : 11,070,702.10 = 7,886,315.90 : x
  2. Step 2: Convert to fraction form
    7,886,315.90/11,070,702.10 = 7,886,315.90/x
  3. Step 3: Cross multiply
    7,886,315.90x = 11,070,702.10 × 7,886,315.90
  4. Step 4: Simplify right side
    7,886,315.90x = 87,307,053,995,393.39
  5. Step 5: Solve for x
    x = 87,307,053,995,393.39/7,886,315.90
  6. Step 6: Final answer
    x = 11,070,702.10

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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.