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Finding the Fourth Proportional to 992,714.90, 1,489,072.35 and 614,801.30

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Solution

The fourth proportional to 992,714.90, 1,489,072.35 and 614,801.30 is: 922,201.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,714.90 : 1,489,072.35 = 614,801.30 : x
  2. Step 2: Convert to fraction form
    992,714.90/1,489,072.35 = 614,801.30/x
  3. Step 3: Cross multiply
    992,714.90x = 1,489,072.35 × 614,801.30
  4. Step 4: Simplify right side
    992,714.90x = 915,483,616,574.06
  5. Step 5: Solve for x
    x = 915,483,616,574.06/992,714.90
  6. Step 6: Final answer
    x = 922,201.95

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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.