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Finding the Fourth Proportional to 630,133.10, 945,199.65 and 621,838.70

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Solution

The fourth proportional to 630,133.10, 945,199.65 and 621,838.70 is: 932,758.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,133.10 : 945,199.65 = 621,838.70 : x
  2. Step 2: Convert to fraction form
    630,133.10/945,199.65 = 621,838.70/x
  3. Step 3: Cross multiply
    630,133.10x = 945,199.65 × 621,838.70
  4. Step 4: Simplify right side
    630,133.10x = 587,761,721,596.46
  5. Step 5: Solve for x
    x = 587,761,721,596.46/630,133.10
  6. Step 6: Final answer
    x = 932,758.05

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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.