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Finding the Fourth Proportional to 82,706.30, 124,059.45 and 60,415.10

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Solution

The fourth proportional to 82,706.30, 124,059.45 and 60,415.10 is: 90,622.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,706.30 : 124,059.45 = 60,415.10 : x
  2. Step 2: Convert to fraction form
    82,706.30/124,059.45 = 60,415.10/x
  3. Step 3: Cross multiply
    82,706.30x = 124,059.45 × 60,415.10
  4. Step 4: Simplify right side
    82,706.30x = 7,495,064,077.70
  5. Step 5: Solve for x
    x = 7,495,064,077.70/82,706.30
  6. Step 6: Final answer
    x = 90,622.65

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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.