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Finding the Fourth Proportional to 655,128,636.80, 982,692,955.20 and 605,244,041.60

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Solution

The fourth proportional to 655,128,636.80, 982,692,955.20 and 605,244,041.60 is: 907,866,062.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,128,636.80 : 982,692,955.20 = 605,244,041.60 : x
  2. Step 2: Convert to fraction form
    655,128,636.80/982,692,955.20 = 605,244,041.60/x
  3. Step 3: Cross multiply
    655,128,636.80x = 982,692,955.20 × 605,244,041.60
  4. Step 4: Simplify right side
    655,128,636.80x = 594,769,055,857,095,808
  5. Step 5: Solve for x
    x = 594,769,055,857,095,808/655,128,636.80
  6. Step 6: Final answer
    x = 907,866,062.40

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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.