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Finding the Fourth Proportional to 15,316.16, 22,955.79 and 7,916.63

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Solution

The fourth proportional to 15,316.16, 22,955.79 and 7,916.63 is: 11,865.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,316.16 : 22,955.79 = 7,916.63 : x
  2. Step 2: Convert to fraction form
    15,316.16/22,955.79 = 7,916.63/x
  3. Step 3: Cross multiply
    15,316.16x = 22,955.79 × 7,916.63
  4. Step 4: Simplify right side
    15,316.16x = 181,732,495.79
  5. Step 5: Solve for x
    x = 181,732,495.79/15,316.16
  6. Step 6: Final answer
    x = 11,865.41

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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.