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Finding the Fourth Proportional to 572,012.24, 857,681.91 and 217,051.21

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Solution

The fourth proportional to 572,012.24, 857,681.91 and 217,051.21 is: 325,449.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,012.24 : 857,681.91 = 217,051.21 : x
  2. Step 2: Convert to fraction form
    572,012.24/857,681.91 = 217,051.21/x
  3. Step 3: Cross multiply
    572,012.24x = 857,681.91 × 217,051.21
  4. Step 4: Simplify right side
    572,012.24x = 186,160,896,360.61
  5. Step 5: Solve for x
    x = 186,160,896,360.61/572,012.24
  6. Step 6: Final answer
    x = 325,449.15

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.