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Finding the Fourth Proportional to 657,651.40, 986,477.10 and 303,357.40

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Solution

The fourth proportional to 657,651.40, 986,477.10 and 303,357.40 is: 455,036.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,651.40 : 986,477.10 = 303,357.40 : x
  2. Step 2: Convert to fraction form
    657,651.40/986,477.10 = 303,357.40/x
  3. Step 3: Cross multiply
    657,651.40x = 986,477.10 × 303,357.40
  4. Step 4: Simplify right side
    657,651.40x = 299,255,128,215.54
  5. Step 5: Solve for x
    x = 299,255,128,215.54/657,651.40
  6. Step 6: Final answer
    x = 455,036.10

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Half scale
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Double scale
Find fourth proportional to 657,652.40, 986,478.60 and 303,358.40
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.