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Finding the Fourth Proportional to 328,924,358.39, 493,381,888.22 and 79,931,445.93

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Solution

The fourth proportional to 328,924,358.39, 493,381,888.22 and 79,931,445.93 is: 119,896,039.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,924,358.39 : 493,381,888.22 = 79,931,445.93 : x
  2. Step 2: Convert to fraction form
    328,924,358.39/493,381,888.22 = 79,931,445.93/x
  3. Step 3: Cross multiply
    328,924,358.39x = 493,381,888.22 × 79,931,445.93
  4. Step 4: Simplify right side
    328,924,358.39x = 39,436,727,720,698,576
  5. Step 5: Solve for x
    x = 39,436,727,720,698,576/328,924,358.39
  6. Step 6: Final answer
    x = 119,896,039.06

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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.