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Finding the Fourth Proportional to 56,695,109.70, 85,042,664.55 and 45,357,701.70

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Solution

The fourth proportional to 56,695,109.70, 85,042,664.55 and 45,357,701.70 is: 68,036,552.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,695,109.70 : 85,042,664.55 = 45,357,701.70 : x
  2. Step 2: Convert to fraction form
    56,695,109.70/85,042,664.55 = 45,357,701.70/x
  3. Step 3: Cross multiply
    56,695,109.70x = 85,042,664.55 × 45,357,701.70
  4. Step 4: Simplify right side
    56,695,109.70x = 3,857,339,810,432,065
  5. Step 5: Solve for x
    x = 3,857,339,810,432,065/56,695,109.70
  6. Step 6: Final answer
    x = 68,036,552.55

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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.