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Finding the Fourth Proportional to 10,955.70, 16,437.60 and 4,386.60

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Solution

The fourth proportional to 10,955.70, 16,437.60 and 4,386.60 is: 6,581.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,955.70 : 16,437.60 = 4,386.60 : x
  2. Step 2: Convert to fraction form
    10,955.70/16,437.60 = 4,386.60/x
  3. Step 3: Cross multiply
    10,955.70x = 16,437.60 × 4,386.60
  4. Step 4: Simplify right side
    10,955.70x = 72,105,176.16
  5. Step 5: Solve for x
    x = 72,105,176.16/10,955.70
  6. Step 6: Final answer
    x = 6,581.52

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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.