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Finding the Fourth Proportional to 103,814.70, 155,503.35 and 103,814.70

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Solution

The fourth proportional to 103,814.70, 155,503.35 and 103,814.70 is: 155,503.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,814.70 : 155,503.35 = 103,814.70 : x
  2. Step 2: Convert to fraction form
    103,814.70/155,503.35 = 103,814.70/x
  3. Step 3: Cross multiply
    103,814.70x = 155,503.35 × 103,814.70
  4. Step 4: Simplify right side
    103,814.70x = 16,143,533,629.25
  5. Step 5: Solve for x
    x = 16,143,533,629.25/103,814.70
  6. Step 6: Final answer
    x = 155,503.35

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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.