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Finding the Fourth Proportional to 201,017,973.80, 301,526,960.70 and 86,014,141.40

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Solution

The fourth proportional to 201,017,973.80, 301,526,960.70 and 86,014,141.40 is: 129,021,212.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,017,973.80 : 301,526,960.70 = 86,014,141.40 : x
  2. Step 2: Convert to fraction form
    201,017,973.80/301,526,960.70 = 86,014,141.40/x
  3. Step 3: Cross multiply
    201,017,973.80x = 301,526,960.70 × 86,014,141.40
  4. Step 4: Simplify right side
    201,017,973.80x = 25,935,582,633,562,044
  5. Step 5: Solve for x
    x = 25,935,582,633,562,044/201,017,973.80
  6. Step 6: Final answer
    x = 129,021,212.10

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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.