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Finding the Fourth Proportional to 572,530.10, 858,795.15 and 413,899.70

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Solution

The fourth proportional to 572,530.10, 858,795.15 and 413,899.70 is: 620,849.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,530.10 : 858,795.15 = 413,899.70 : x
  2. Step 2: Convert to fraction form
    572,530.10/858,795.15 = 413,899.70/x
  3. Step 3: Cross multiply
    572,530.10x = 858,795.15 × 413,899.70
  4. Step 4: Simplify right side
    572,530.10x = 355,455,054,946.46
  5. Step 5: Solve for x
    x = 355,455,054,946.46/572,530.10
  6. Step 6: Final answer
    x = 620,849.55

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Half scale
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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.