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Finding the Fourth Proportional to 111,211.87, 153,483.42 and 63,472.45

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Solution

The fourth proportional to 111,211.87, 153,483.42 and 63,472.45 is: 87,598.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,211.87 : 153,483.42 = 63,472.45 : x
  2. Step 2: Convert to fraction form
    111,211.87/153,483.42 = 63,472.45/x
  3. Step 3: Cross multiply
    111,211.87x = 153,483.42 × 63,472.45
  4. Step 4: Simplify right side
    111,211.87x = 9,741,968,701.78
  5. Step 5: Solve for x
    x = 9,741,968,701.78/111,211.87
  6. Step 6: Final answer
    x = 87,598.28

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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.