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Finding the Fourth Proportional to 657,485.90, 986,228.85 and 433,537.10

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Solution

The fourth proportional to 657,485.90, 986,228.85 and 433,537.10 is: 650,305.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,485.90 : 986,228.85 = 433,537.10 : x
  2. Step 2: Convert to fraction form
    657,485.90/986,228.85 = 433,537.10/x
  3. Step 3: Cross multiply
    657,485.90x = 986,228.85 × 433,537.10
  4. Step 4: Simplify right side
    657,485.90x = 427,566,795,565.34
  5. Step 5: Solve for x
    x = 427,566,795,565.34/657,485.90
  6. Step 6: Final answer
    x = 650,305.65

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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.