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Finding the Fourth Proportional to 81,358.94, 112,281.80 and 59,946.49

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Solution

The fourth proportional to 81,358.94, 112,281.80 and 59,946.49 is: 82,730.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,358.94 : 112,281.80 = 59,946.49 : x
  2. Step 2: Convert to fraction form
    81,358.94/112,281.80 = 59,946.49/x
  3. Step 3: Cross multiply
    81,358.94x = 112,281.80 × 59,946.49
  4. Step 4: Simplify right side
    81,358.94x = 6,730,899,641.50
  5. Step 5: Solve for x
    x = 6,730,899,641.50/81,358.94
  6. Step 6: Final answer
    x = 82,730.91

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1.5x scale

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.