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Finding the Fourth Proportional to 12,368.40, 17,359.50 and 12,368.40

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Solution

The fourth proportional to 12,368.40, 17,359.50 and 12,368.40 is: 17,359.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,368.40 : 17,359.50 = 12,368.40 : x
  2. Step 2: Convert to fraction form
    12,368.40/17,359.50 = 12,368.40/x
  3. Step 3: Cross multiply
    12,368.40x = 17,359.50 × 12,368.40
  4. Step 4: Simplify right side
    12,368.40x = 214,709,239.80
  5. Step 5: Solve for x
    x = 214,709,239.80/12,368.40
  6. Step 6: Final answer
    x = 17,359.50

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1.5x scale

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.