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Finding the Fourth Proportional to 716,239.36, 988,118.73 and 406,076.59

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Solution

The fourth proportional to 716,239.36, 988,118.73 and 406,076.59 is: 560,220.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,239.36 : 988,118.73 = 406,076.59 : x
  2. Step 2: Convert to fraction form
    716,239.36/988,118.73 = 406,076.59/x
  3. Step 3: Cross multiply
    716,239.36x = 988,118.73 × 406,076.59
  4. Step 4: Simplify right side
    716,239.36x = 401,251,884,393.53
  5. Step 5: Solve for x
    x = 401,251,884,393.53/716,239.36
  6. Step 6: Final answer
    x = 560,220.38

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Half scale
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Double scale
Find fourth proportional to 716,240.36, 988,120.11 and 406,077.59
Similar ratio
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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.