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Finding the Fourth Proportional to 201,909,740.80, 302,864,611.20 and 65,608,902.40

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Solution

The fourth proportional to 201,909,740.80, 302,864,611.20 and 65,608,902.40 is: 98,413,353.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,909,740.80 : 302,864,611.20 = 65,608,902.40 : x
  2. Step 2: Convert to fraction form
    201,909,740.80/302,864,611.20 = 65,608,902.40/x
  3. Step 3: Cross multiply
    201,909,740.80x = 302,864,611.20 × 65,608,902.40
  4. Step 4: Simplify right side
    201,909,740.80x = 19,870,614,716,634,744
  5. Step 5: Solve for x
    x = 19,870,614,716,634,744/201,909,740.80
  6. Step 6: Final answer
    x = 98,413,353.60

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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.