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Finding the Fourth Proportional to 651,674.70, 977,512.05 and 439,098.30

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Solution

The fourth proportional to 651,674.70, 977,512.05 and 439,098.30 is: 658,647.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,674.70 : 977,512.05 = 439,098.30 : x
  2. Step 2: Convert to fraction form
    651,674.70/977,512.05 = 439,098.30/x
  3. Step 3: Cross multiply
    651,674.70x = 977,512.05 × 439,098.30
  4. Step 4: Simplify right side
    651,674.70x = 429,223,879,384.52
  5. Step 5: Solve for x
    x = 429,223,879,384.52/651,674.70
  6. Step 6: Final answer
    x = 658,647.45

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Double scale
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Similar ratio
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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.