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Finding the Fourth Proportional to 235,528.69, 325,031.10 and 128,099.50

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Solution

The fourth proportional to 235,528.69, 325,031.10 and 128,099.50 is: 176,778.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,528.69 : 325,031.10 = 128,099.50 : x
  2. Step 2: Convert to fraction form
    235,528.69/325,031.10 = 128,099.50/x
  3. Step 3: Cross multiply
    235,528.69x = 325,031.10 × 128,099.50
  4. Step 4: Simplify right side
    235,528.69x = 41,636,321,394.45
  5. Step 5: Solve for x
    x = 41,636,321,394.45/235,528.69
  6. Step 6: Final answer
    x = 176,778.13

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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.