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Finding the Fourth Proportional to 102,528.40, 153,792.60 and 91,814.80

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Solution

The fourth proportional to 102,528.40, 153,792.60 and 91,814.80 is: 137,722.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,528.40 : 153,792.60 = 91,814.80 : x
  2. Step 2: Convert to fraction form
    102,528.40/153,792.60 = 91,814.80/x
  3. Step 3: Cross multiply
    102,528.40x = 153,792.60 × 91,814.80
  4. Step 4: Simplify right side
    102,528.40x = 14,120,436,810.48
  5. Step 5: Solve for x
    x = 14,120,436,810.48/102,528.40
  6. Step 6: Final answer
    x = 137,722.20

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1.5x scale

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.