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Finding the Fourth Proportional to 717,332.39, 989,886.72 and 411,189.25

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Solution

The fourth proportional to 717,332.39, 989,886.72 and 411,189.25 is: 567,422.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,332.39 : 989,886.72 = 411,189.25 : x
  2. Step 2: Convert to fraction form
    717,332.39/989,886.72 = 411,189.25/x
  3. Step 3: Cross multiply
    717,332.39x = 989,886.72 × 411,189.25
  4. Step 4: Simplify right side
    717,332.39x = 407,030,777,981.76
  5. Step 5: Solve for x
    x = 407,030,777,981.76/717,332.39
  6. Step 6: Final answer
    x = 567,422.83

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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.