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Finding the Fourth Proportional to 657,929.80, 986,927.10 and 343,001.80

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Solution

The fourth proportional to 657,929.80, 986,927.10 and 343,001.80 is: 514,519.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,929.80 : 986,927.10 = 343,001.80 : x
  2. Step 2: Convert to fraction form
    657,929.80/986,927.10 = 343,001.80/x
  3. Step 3: Cross multiply
    657,929.80x = 986,927.10 × 343,001.80
  4. Step 4: Simplify right side
    657,929.80x = 338,517,771,768.78
  5. Step 5: Solve for x
    x = 338,517,771,768.78/657,929.80
  6. Step 6: Final answer
    x = 514,519.59

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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.