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Finding the Fourth Proportional to 570,011.40, 786,546.59 and 328,372.20

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Solution

The fourth proportional to 570,011.40, 786,546.59 and 328,372.20 is: 453,113.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,011.40 : 786,546.59 = 328,372.20 : x
  2. Step 2: Convert to fraction form
    570,011.40/786,546.59 = 328,372.20/x
  3. Step 3: Cross multiply
    570,011.40x = 786,546.59 × 328,372.20
  4. Step 4: Simplify right side
    570,011.40x = 258,280,032,518.94
  5. Step 5: Solve for x
    x = 258,280,032,518.94/570,011.40
  6. Step 6: Final answer
    x = 453,113.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.