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Finding the Fourth Proportional to 822,879.90, 1,234,319.85 and 811,070.10

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Solution

The fourth proportional to 822,879.90, 1,234,319.85 and 811,070.10 is: 1,216,605.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    822,879.90 : 1,234,319.85 = 811,070.10 : x
  2. Step 2: Convert to fraction form
    822,879.90/1,234,319.85 = 811,070.10/x
  3. Step 3: Cross multiply
    822,879.90x = 1,234,319.85 × 811,070.10
  4. Step 4: Simplify right side
    822,879.90x = 1,001,119,924,171.49
  5. Step 5: Solve for x
    x = 1,001,119,924,171.49/822,879.90
  6. Step 6: Final answer
    x = 1,216,605.15

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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.