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Finding the Fourth Proportional to 717,528.77, 990,232.25 and 411,602.91

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Solution

The fourth proportional to 717,528.77, 990,232.25 and 411,602.91 is: 568,036.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,528.77 : 990,232.25 = 411,602.91 : x
  2. Step 2: Convert to fraction form
    717,528.77/990,232.25 = 411,602.91/x
  3. Step 3: Cross multiply
    717,528.77x = 990,232.25 × 411,602.91
  4. Step 4: Simplify right side
    717,528.77x = 407,582,475,675.85
  5. Step 5: Solve for x
    x = 407,582,475,675.85/717,528.77
  6. Step 6: Final answer
    x = 568,036.42

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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.