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Finding the Fourth Proportional to 717,516.68, 990,140.20 and 411,573.81

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Solution

The fourth proportional to 717,516.68, 990,140.20 and 411,573.81 is: 567,953.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,516.68 : 990,140.20 = 411,573.81 : x
  2. Step 2: Convert to fraction form
    717,516.68/990,140.20 = 411,573.81/x
  3. Step 3: Cross multiply
    717,516.68x = 990,140.20 × 411,573.81
  4. Step 4: Simplify right side
    717,516.68x = 407,515,773,977.82
  5. Step 5: Solve for x
    x = 407,515,773,977.82/717,516.68
  6. Step 6: Final answer
    x = 567,953.03

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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.