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Finding the Fourth Proportional to 926,423.10, 1,389,634.65 and 365,384.70

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Solution

The fourth proportional to 926,423.10, 1,389,634.65 and 365,384.70 is: 548,077.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,423.10 : 1,389,634.65 = 365,384.70 : x
  2. Step 2: Convert to fraction form
    926,423.10/1,389,634.65 = 365,384.70/x
  3. Step 3: Cross multiply
    926,423.10x = 1,389,634.65 × 365,384.70
  4. Step 4: Simplify right side
    926,423.10x = 507,751,239,699.86
  5. Step 5: Solve for x
    x = 507,751,239,699.86/926,423.10
  6. Step 6: Final answer
    x = 548,077.05

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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.