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Finding the Fourth Proportional to 525,141.40, 787,712.10 and 225,765.40

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Solution

The fourth proportional to 525,141.40, 787,712.10 and 225,765.40 is: 338,648.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,141.40 : 787,712.10 = 225,765.40 : x
  2. Step 2: Convert to fraction form
    525,141.40/787,712.10 = 225,765.40/x
  3. Step 3: Cross multiply
    525,141.40x = 787,712.10 × 225,765.40
  4. Step 4: Simplify right side
    525,141.40x = 177,838,137,341.34
  5. Step 5: Solve for x
    x = 177,838,137,341.34/525,141.40
  6. Step 6: Final answer
    x = 338,648.10

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.