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Finding the Fourth Proportional to 623,070.45, 859,854.93 and 347,434.65

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Solution

The fourth proportional to 623,070.45, 859,854.93 and 347,434.65 is: 479,469.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,070.45 : 859,854.93 = 347,434.65 : x
  2. Step 2: Convert to fraction form
    623,070.45/859,854.93 = 347,434.65/x
  3. Step 3: Cross multiply
    623,070.45x = 859,854.93 × 347,434.65
  4. Step 4: Simplify right side
    623,070.45x = 298,743,396,655.33
  5. Step 5: Solve for x
    x = 298,743,396,655.33/623,070.45
  6. Step 6: Final answer
    x = 479,469.69

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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.