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Finding the Fourth Proportional to 651,962,904.30, 977,991,595.65 and 392,619,696.30

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Solution

The fourth proportional to 651,962,904.30, 977,991,595.65 and 392,619,696.30 is: 588,957,992.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,962,904.30 : 977,991,595.65 = 392,619,696.30 : x
  2. Step 2: Convert to fraction form
    651,962,904.30/977,991,595.65 = 392,619,696.30/x
  3. Step 3: Cross multiply
    651,962,904.30x = 977,991,595.65 × 392,619,696.30
  4. Step 4: Simplify right side
    651,962,904.30x = 383,978,763,268,055,424
  5. Step 5: Solve for x
    x = 383,978,763,268,055,424/651,962,904.30
  6. Step 6: Final answer
    x = 588,957,992.45

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1.5x scale

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.