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Finding the Fourth Proportional to 334,428.60, 501,642.90 and 156,953.55

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Solution

The fourth proportional to 334,428.60, 501,642.90 and 156,953.55 is: 235,430.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,428.60 : 501,642.90 = 156,953.55 : x
  2. Step 2: Convert to fraction form
    334,428.60/501,642.90 = 156,953.55/x
  3. Step 3: Cross multiply
    334,428.60x = 501,642.90 × 156,953.55
  4. Step 4: Simplify right side
    334,428.60x = 78,734,633,987.30
  5. Step 5: Solve for x
    x = 78,734,633,987.30/334,428.60
  6. Step 6: Final answer
    x = 235,430.33

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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.