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Finding the Fourth Proportional to 201,582,384.90, 302,429,564.55 and 86,622,000.90

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Solution

The fourth proportional to 201,582,384.90, 302,429,564.55 and 86,622,000.90 is: 129,957,059.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,582,384.90 : 302,429,564.55 = 86,622,000.90 : x
  2. Step 2: Convert to fraction form
    201,582,384.90/302,429,564.55 = 86,622,000.90/x
  3. Step 3: Cross multiply
    201,582,384.90x = 302,429,564.55 × 86,622,000.90
  4. Step 4: Simplify right side
    201,582,384.90x = 26,197,054,012,636,712
  5. Step 5: Solve for x
    x = 26,197,054,012,636,712/201,582,384.90
  6. Step 6: Final answer
    x = 129,957,059.62

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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.