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Finding the Fourth Proportional to 577,316.91, 861,747.81 and 509,141.55

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Solution

The fourth proportional to 577,316.91, 861,747.81 and 509,141.55 is: 759,984.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,316.91 : 861,747.81 = 509,141.55 : x
  2. Step 2: Convert to fraction form
    577,316.91/861,747.81 = 509,141.55/x
  3. Step 3: Cross multiply
    577,316.91x = 861,747.81 × 509,141.55
  4. Step 4: Simplify right side
    577,316.91x = 438,751,615,692.51
  5. Step 5: Solve for x
    x = 438,751,615,692.51/577,316.91
  6. Step 6: Final answer
    x = 759,984.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.