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Finding the Fourth Proportional to 738,961,803.83, 1,019,769,990.98 and 399,870,281.14

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Solution

The fourth proportional to 738,961,803.83, 1,019,769,990.98 and 399,870,281.14 is: 551,822,449.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,961,803.83 : 1,019,769,990.98 = 399,870,281.14 : x
  2. Step 2: Convert to fraction form
    738,961,803.83/1,019,769,990.98 = 399,870,281.14/x
  3. Step 3: Cross multiply
    738,961,803.83x = 1,019,769,990.98 × 399,870,281.14
  4. Step 4: Simplify right side
    738,961,803.83x = 407,775,712,986,759,104
  5. Step 5: Solve for x
    x = 407,775,712,986,759,104/738,961,803.83
  6. Step 6: Final answer
    x = 551,822,449.92

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Double scale
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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.