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Finding the Fourth Proportional to 67,970.92, 93,800.50 and 39,671.08

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Solution

The fourth proportional to 67,970.92, 93,800.50 and 39,671.08 is: 54,746.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,970.92 : 93,800.50 = 39,671.08 : x
  2. Step 2: Convert to fraction form
    67,970.92/93,800.50 = 39,671.08/x
  3. Step 3: Cross multiply
    67,970.92x = 93,800.50 × 39,671.08
  4. Step 4: Simplify right side
    67,970.92x = 3,721,167,139.54
  5. Step 5: Solve for x
    x = 3,721,167,139.54/67,970.92
  6. Step 6: Final answer
    x = 54,746.46

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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.