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Finding the Fourth Proportional to 604,353,039.70, 906,529,559.55 and 420,687,030.10

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Solution

The fourth proportional to 604,353,039.70, 906,529,559.55 and 420,687,030.10 is: 631,030,545.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,353,039.70 : 906,529,559.55 = 420,687,030.10 : x
  2. Step 2: Convert to fraction form
    604,353,039.70/906,529,559.55 = 420,687,030.10/x
  3. Step 3: Cross multiply
    604,353,039.70x = 906,529,559.55 × 420,687,030.10
  4. Step 4: Simplify right side
    604,353,039.70x = 381,365,228,104,950,592
  5. Step 5: Solve for x
    x = 381,365,228,104,950,592/604,353,039.70
  6. Step 6: Final answer
    x = 631,030,545.15

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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.