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Finding the Fourth Proportional to 69,915.18, 96,483.99 and 39,698.22

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Solution

The fourth proportional to 69,915.18, 96,483.99 and 39,698.22 is: 54,784.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,915.18 : 96,483.99 = 39,698.22 : x
  2. Step 2: Convert to fraction form
    69,915.18/96,483.99 = 39,698.22/x
  3. Step 3: Cross multiply
    69,915.18x = 96,483.99 × 39,698.22
  4. Step 4: Simplify right side
    69,915.18x = 3,830,242,661.50
  5. Step 5: Solve for x
    x = 3,830,242,661.50/69,915.18
  6. Step 6: Final answer
    x = 54,784.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.