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Finding the Fourth Proportional to 235,335.99, 324,721.40 and 139,866.15

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Solution

The fourth proportional to 235,335.99, 324,721.40 and 139,866.15 is: 192,990.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,335.99 : 324,721.40 = 139,866.15 : x
  2. Step 2: Convert to fraction form
    235,335.99/324,721.40 = 139,866.15/x
  3. Step 3: Cross multiply
    235,335.99x = 324,721.40 × 139,866.15
  4. Step 4: Simplify right side
    235,335.99x = 45,417,531,341.28
  5. Step 5: Solve for x
    x = 45,417,531,341.28/235,335.99
  6. Step 6: Final answer
    x = 192,990.16

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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.