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Finding the Fourth Proportional to 453,681.20, 680,521.80 and 404,692.40

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Solution

The fourth proportional to 453,681.20, 680,521.80 and 404,692.40 is: 607,038.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,681.20 : 680,521.80 = 404,692.40 : x
  2. Step 2: Convert to fraction form
    453,681.20/680,521.80 = 404,692.40/x
  3. Step 3: Cross multiply
    453,681.20x = 680,521.80 × 404,692.40
  4. Step 4: Simplify right side
    453,681.20x = 275,402,000,494.32
  5. Step 5: Solve for x
    x = 275,402,000,494.32/453,681.20
  6. Step 6: Final answer
    x = 607,038.60

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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.