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Finding the Fourth Proportional to 702,634,233.60, 969,666,076.80 and 389,367,740.16

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Solution

The fourth proportional to 702,634,233.60, 969,666,076.80 and 389,367,740.16 is: 537,344,568.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,634,233.60 : 969,666,076.80 = 389,367,740.16 : x
  2. Step 2: Convert to fraction form
    702,634,233.60/969,666,076.80 = 389,367,740.16/x
  3. Step 3: Cross multiply
    702,634,233.60x = 969,666,076.80 × 389,367,740.16
  4. Step 4: Simplify right side
    702,634,233.60x = 377,556,689,033,428,992
  5. Step 5: Solve for x
    x = 377,556,689,033,428,992/702,634,233.60
  6. Step 6: Final answer
    x = 537,344,568.45

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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.