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Finding the Fourth Proportional to 60,658,085.80, 90,987,128.70 and 40,250,751.40

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Solution

The fourth proportional to 60,658,085.80, 90,987,128.70 and 40,250,751.40 is: 60,376,127.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,658,085.80 : 90,987,128.70 = 40,250,751.40 : x
  2. Step 2: Convert to fraction form
    60,658,085.80/90,987,128.70 = 40,250,751.40/x
  3. Step 3: Cross multiply
    60,658,085.80x = 90,987,128.70 × 40,250,751.40
  4. Step 4: Simplify right side
    60,658,085.80x = 3,662,300,297,903,505
  5. Step 5: Solve for x
    x = 3,662,300,297,903,505/60,658,085.80
  6. Step 6: Final answer
    x = 60,376,127.10

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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.