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Finding the Fourth Proportional to 657,473.40, 986,210.10 and 642,711.15

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Solution

The fourth proportional to 657,473.40, 986,210.10 and 642,711.15 is: 964,066.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,473.40 : 986,210.10 = 642,711.15 : x
  2. Step 2: Convert to fraction form
    657,473.40/986,210.10 = 642,711.15/x
  3. Step 3: Cross multiply
    657,473.40x = 986,210.10 × 642,711.15
  4. Step 4: Simplify right side
    657,473.40x = 633,848,227,512.62
  5. Step 5: Solve for x
    x = 633,848,227,512.62/657,473.40
  6. Step 6: Final answer
    x = 964,066.73

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Double scale
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Similar ratio
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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.