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Finding the Fourth Proportional to 201,955,490.87, 278,686,566.40 and 117,176,042.03

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Solution

The fourth proportional to 201,955,490.87, 278,686,566.40 and 117,176,042.03 is: 161,695,969.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,955,490.87 : 278,686,566.40 = 117,176,042.03 : x
  2. Step 2: Convert to fraction form
    201,955,490.87/278,686,566.40 = 117,176,042.03/x
  3. Step 3: Cross multiply
    201,955,490.87x = 278,686,566.40 × 117,176,042.03
  4. Step 4: Simplify right side
    201,955,490.87x = 32,655,388,817,682,784
  5. Step 5: Solve for x
    x = 32,655,388,817,682,784/201,955,490.87
  6. Step 6: Final answer
    x = 161,695,969.13

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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.