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Finding the Fourth Proportional to 10,369,985.70, 15,554,978.55 and 9,740,129.70

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Solution

The fourth proportional to 10,369,985.70, 15,554,978.55 and 9,740,129.70 is: 14,610,194.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,369,985.70 : 15,554,978.55 = 9,740,129.70 : x
  2. Step 2: Convert to fraction form
    10,369,985.70/15,554,978.55 = 9,740,129.70/x
  3. Step 3: Cross multiply
    10,369,985.70x = 15,554,978.55 × 9,740,129.70
  4. Step 4: Simplify right side
    10,369,985.70x = 151,507,508,557,717.94
  5. Step 5: Solve for x
    x = 151,507,508,557,717.94/10,369,985.70
  6. Step 6: Final answer
    x = 14,610,194.55

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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.