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Finding the Fourth Proportional to 12,996,507.16, 17,935,114.09 and 7,116,034.49

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Solution

The fourth proportional to 12,996,507.16, 17,935,114.09 and 7,116,034.49 is: 9,820,091.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,996,507.16 : 17,935,114.09 = 7,116,034.49 : x
  2. Step 2: Convert to fraction form
    12,996,507.16/17,935,114.09 = 7,116,034.49/x
  3. Step 3: Cross multiply
    12,996,507.16x = 17,935,114.09 × 7,116,034.49
  4. Step 4: Simplify right side
    12,996,507.16x = 127,626,890,473,572.64
  5. Step 5: Solve for x
    x = 127,626,890,473,572.64/12,996,507.16
  6. Step 6: Final answer
    x = 9,820,091.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.