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Finding the Fourth Proportional to 201,653,815.20, 302,518,047.60 and 65,343,645.60

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Solution

The fourth proportional to 201,653,815.20, 302,518,047.60 and 65,343,645.60 is: 98,027,563.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,653,815.20 : 302,518,047.60 = 65,343,645.60 : x
  2. Step 2: Convert to fraction form
    201,653,815.20/302,518,047.60 = 65,343,645.60/x
  3. Step 3: Cross multiply
    201,653,815.20x = 302,518,047.60 × 65,343,645.60
  4. Step 4: Simplify right side
    201,653,815.20x = 19,767,632,089,978,332
  5. Step 5: Solve for x
    x = 19,767,632,089,978,332/201,653,815.20
  6. Step 6: Final answer
    x = 98,027,563.08

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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.