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Finding the Fourth Proportional to 60,661,479.90, 85,077,237.30 and 60,661,479.90

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Solution

The fourth proportional to 60,661,479.90, 85,077,237.30 and 60,661,479.90 is: 85,077,237.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,661,479.90 : 85,077,237.30 = 60,661,479.90 : x
  2. Step 2: Convert to fraction form
    60,661,479.90/85,077,237.30 = 60,661,479.90/x
  3. Step 3: Cross multiply
    60,661,479.90x = 85,077,237.30 × 60,661,479.90
  4. Step 4: Simplify right side
    60,661,479.90x = 5,160,911,120,421,480
  5. Step 5: Solve for x
    x = 5,160,911,120,421,480/60,661,479.90
  6. Step 6: Final answer
    x = 85,077,237.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.