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Finding the Fourth Proportional to 621,810.30, 932,715.45 and 607,986.30

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Solution

The fourth proportional to 621,810.30, 932,715.45 and 607,986.30 is: 911,979.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,810.30 : 932,715.45 = 607,986.30 : x
  2. Step 2: Convert to fraction form
    621,810.30/932,715.45 = 607,986.30/x
  3. Step 3: Cross multiply
    621,810.30x = 932,715.45 × 607,986.30
  4. Step 4: Simplify right side
    621,810.30x = 567,078,215,398.34
  5. Step 5: Solve for x
    x = 567,078,215,398.34/621,810.30
  6. Step 6: Final answer
    x = 911,979.45

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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.