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Finding the Fourth Proportional to 235,483.95, 324,971.81 and 128,057.14

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Solution

The fourth proportional to 235,483.95, 324,971.81 and 128,057.14 is: 176,721.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,483.95 : 324,971.81 = 128,057.14 : x
  2. Step 2: Convert to fraction form
    235,483.95/324,971.81 = 128,057.14/x
  3. Step 3: Cross multiply
    235,483.95x = 324,971.81 × 128,057.14
  4. Step 4: Simplify right side
    235,483.95x = 41,614,960,569.22
  5. Step 5: Solve for x
    x = 41,614,960,569.22/235,483.95
  6. Step 6: Final answer
    x = 176,721.01

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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.