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Finding the Fourth Proportional to 525,642.40, 788,463.60 and 193,175.20

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Solution

The fourth proportional to 525,642.40, 788,463.60 and 193,175.20 is: 289,762.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,642.40 : 788,463.60 = 193,175.20 : x
  2. Step 2: Convert to fraction form
    525,642.40/788,463.60 = 193,175.20/x
  3. Step 3: Cross multiply
    525,642.40x = 788,463.60 × 193,175.20
  4. Step 4: Simplify right side
    525,642.40x = 152,311,613,622.72
  5. Step 5: Solve for x
    x = 152,311,613,622.72/525,642.40
  6. Step 6: Final answer
    x = 289,762.80

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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.