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Finding the Fourth Proportional to 117,790.24, 162,547.62 and 67,486

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Solution

The fourth proportional to 117,790.24, 162,547.62 and 67,486 is: 93,129.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,790.24 : 162,547.62 = 67,486 : x
  2. Step 2: Convert to fraction form
    117,790.24/162,547.62 = 67,486/x
  3. Step 3: Cross multiply
    117,790.24x = 162,547.62 × 67,486
  4. Step 4: Simplify right side
    117,790.24x = 10,969,688,683.32
  5. Step 5: Solve for x
    x = 10,969,688,683.32/117,790.24
  6. Step 6: Final answer
    x = 93,129.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.