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Finding the Fourth Proportional to 93,930.12, 129,632.54 and 53,649.90

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Solution

The fourth proportional to 93,930.12, 129,632.54 and 53,649.90 is: 74,041.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,930.12 : 129,632.54 = 53,649.90 : x
  2. Step 2: Convert to fraction form
    93,930.12/129,632.54 = 53,649.90/x
  3. Step 3: Cross multiply
    93,930.12x = 129,632.54 × 53,649.90
  4. Step 4: Simplify right side
    93,930.12x = 6,954,772,539.50
  5. Step 5: Solve for x
    x = 6,954,772,539.50/93,930.12
  6. Step 6: Final answer
    x = 74,041.99

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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.