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Finding the Fourth Proportional to 572,168,994.90, 858,381,429.55 and 208,663,350.90

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Solution

The fourth proportional to 572,168,994.90, 858,381,429.55 and 208,663,350.90 is: 313,041,683.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,168,994.90 : 858,381,429.55 = 208,663,350.90 : x
  2. Step 2: Convert to fraction form
    572,168,994.90/858,381,429.55 = 208,663,350.90/x
  3. Step 3: Cross multiply
    572,168,994.90x = 858,381,429.55 × 208,663,350.90
  4. Step 4: Simplify right side
    572,168,994.90x = 179,112,745,440,235,264
  5. Step 5: Solve for x
    x = 179,112,745,440,235,264/572,168,994.90
  6. Step 6: Final answer
    x = 313,041,683.55

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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.