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Finding the Fourth Proportional to 665,613.80, 998,550.30 and 286,533.80

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Solution

The fourth proportional to 665,613.80, 998,550.30 and 286,533.80 is: 429,856.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,613.80 : 998,550.30 = 286,533.80 : x
  2. Step 2: Convert to fraction form
    665,613.80/998,550.30 = 286,533.80/x
  3. Step 3: Cross multiply
    665,613.80x = 998,550.30 × 286,533.80
  4. Step 4: Simplify right side
    665,613.80x = 286,118,411,950.14
  5. Step 5: Solve for x
    x = 286,118,411,950.14/665,613.80
  6. Step 6: Final answer
    x = 429,856.49

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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.