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Finding the Fourth Proportional to 520,030,586.80, 780,161,353.80 and 174,974,474.80

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Solution

The fourth proportional to 520,030,586.80, 780,161,353.80 and 174,974,474.80 is: 262,500,565.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,030,586.80 : 780,161,353.80 = 174,974,474.80 : x
  2. Step 2: Convert to fraction form
    520,030,586.80/780,161,353.80 = 174,974,474.80/x
  3. Step 3: Cross multiply
    520,030,586.80x = 780,161,353.80 × 174,974,474.80
  4. Step 4: Simplify right side
    520,030,586.80x = 136,508,323,140,411,984
  5. Step 5: Solve for x
    x = 136,508,323,140,411,984/520,030,586.80
  6. Step 6: Final answer
    x = 262,500,565.55

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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.