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Finding the Fourth Proportional to 702,959.45, 970,084.55 and 380,669.90

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Solution

The fourth proportional to 702,959.45, 970,084.55 and 380,669.90 is: 525,324.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,959.45 : 970,084.55 = 380,669.90 : x
  2. Step 2: Convert to fraction form
    702,959.45/970,084.55 = 380,669.90/x
  3. Step 3: Cross multiply
    702,959.45x = 970,084.55 × 380,669.90
  4. Step 4: Simplify right side
    702,959.45x = 369,281,984,741.30
  5. Step 5: Solve for x
    x = 369,281,984,741.30/702,959.45
  6. Step 6: Final answer
    x = 525,324.74

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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.