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Finding the Fourth Proportional to 15,779,978.70, 23,669,968.05 and 9,061,514.70

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Solution

The fourth proportional to 15,779,978.70, 23,669,968.05 and 9,061,514.70 is: 13,592,272.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,779,978.70 : 23,669,968.05 = 9,061,514.70 : x
  2. Step 2: Convert to fraction form
    15,779,978.70/23,669,968.05 = 9,061,514.70/x
  3. Step 3: Cross multiply
    15,779,978.70x = 23,669,968.05 × 9,061,514.70
  4. Step 4: Simplify right side
    15,779,978.70x = 214,485,763,433,605.31
  5. Step 5: Solve for x
    x = 214,485,763,433,605.31/15,779,978.70
  6. Step 6: Final answer
    x = 13,592,272.05

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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.