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Finding the Fourth Proportional to 572,579.80, 858,869.70 and 360,003.40

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Solution

The fourth proportional to 572,579.80, 858,869.70 and 360,003.40 is: 540,005.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,579.80 : 858,869.70 = 360,003.40 : x
  2. Step 2: Convert to fraction form
    572,579.80/858,869.70 = 360,003.40/x
  3. Step 3: Cross multiply
    572,579.80x = 858,869.70 × 360,003.40
  4. Step 4: Simplify right side
    572,579.80x = 309,196,012,156.98
  5. Step 5: Solve for x
    x = 309,196,012,156.98/572,579.80
  6. Step 6: Final answer
    x = 540,005.10

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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.