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Finding the Fourth Proportional to 695,998.80, 972,298.80 and 695,998.80

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Solution

The fourth proportional to 695,998.80, 972,298.80 and 695,998.80 is: 972,298.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,998.80 : 972,298.80 = 695,998.80 : x
  2. Step 2: Convert to fraction form
    695,998.80/972,298.80 = 695,998.80/x
  3. Step 3: Cross multiply
    695,998.80x = 972,298.80 × 695,998.80
  4. Step 4: Simplify right side
    695,998.80x = 676,718,798,041.44
  5. Step 5: Solve for x
    x = 676,718,798,041.44/695,998.80
  6. Step 6: Final answer
    x = 972,298.80

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Half scale
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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 (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.