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Finding the Fourth Proportional to 665,302.10, 997,953.15 and 286,404.35

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Solution

The fourth proportional to 665,302.10, 997,953.15 and 286,404.35 is: 429,606.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,302.10 : 997,953.15 = 286,404.35 : x
  2. Step 2: Convert to fraction form
    665,302.10/997,953.15 = 286,404.35/x
  3. Step 3: Cross multiply
    665,302.10x = 997,953.15 × 286,404.35
  4. Step 4: Simplify right side
    665,302.10x = 285,818,123,256.20
  5. Step 5: Solve for x
    x = 285,818,123,256.20/665,302.10
  6. Step 6: Final answer
    x = 429,606.53

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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.