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Finding the Fourth Proportional to 550,490,672.40, 825,736,008.60 and 186,985,028.40

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Solution

The fourth proportional to 550,490,672.40, 825,736,008.60 and 186,985,028.40 is: 280,477,542.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,490,672.40 : 825,736,008.60 = 186,985,028.40 : x
  2. Step 2: Convert to fraction form
    550,490,672.40/825,736,008.60 = 186,985,028.40/x
  3. Step 3: Cross multiply
    550,490,672.40x = 825,736,008.60 × 186,985,028.40
  4. Step 4: Simplify right side
    550,490,672.40x = 154,400,271,018,973,664
  5. Step 5: Solve for x
    x = 154,400,271,018,973,664/550,490,672.40
  6. Step 6: Final answer
    x = 280,477,542.60

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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.