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Finding the Fourth Proportional to 10,130,446.94, 13,978,736.07 and 8,070,686.60

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Solution

The fourth proportional to 10,130,446.94, 13,978,736.07 and 8,070,686.60 is: 11,136,527.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,130,446.94 : 13,978,736.07 = 8,070,686.60 : x
  2. Step 2: Convert to fraction form
    10,130,446.94/13,978,736.07 = 8,070,686.60/x
  3. Step 3: Cross multiply
    10,130,446.94x = 13,978,736.07 × 8,070,686.60
  4. Step 4: Simplify right side
    10,130,446.94x = 112,817,997,885,085.66
  5. Step 5: Solve for x
    x = 112,817,997,885,085.66/10,130,446.94
  6. Step 6: Final answer
    x = 11,136,527.20

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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.