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Finding the Fourth Proportional to 657,490.40, 986,235.60 and 433,541.60

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Solution

The fourth proportional to 657,490.40, 986,235.60 and 433,541.60 is: 650,312.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,490.40 : 986,235.60 = 433,541.60 : x
  2. Step 2: Convert to fraction form
    657,490.40/986,235.60 = 433,541.60/x
  3. Step 3: Cross multiply
    657,490.40x = 986,235.60 × 433,541.60
  4. Step 4: Simplify right side
    657,490.40x = 427,574,160,000.96
  5. Step 5: Solve for x
    x = 427,574,160,000.96/657,490.40
  6. Step 6: Final answer
    x = 650,312.40

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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.