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Finding the Fourth Proportional to 657,124.40, 983,843.40 and 638,692.40

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Solution

The fourth proportional to 657,124.40, 983,843.40 and 638,692.40 is: 956,247.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,124.40 : 983,843.40 = 638,692.40 : x
  2. Step 2: Convert to fraction form
    657,124.40/983,843.40 = 638,692.40/x
  3. Step 3: Cross multiply
    657,124.40x = 983,843.40 × 638,692.40
  4. Step 4: Simplify right side
    657,124.40x = 628,373,302,370.16
  5. Step 5: Solve for x
    x = 628,373,302,370.16/657,124.40
  6. Step 6: Final answer
    x = 956,247.10

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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.