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Finding the Fourth Proportional to 524,409.60, 786,614.40 and 499,915.20

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Solution

The fourth proportional to 524,409.60, 786,614.40 and 499,915.20 is: 749,872.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    524,409.60 : 786,614.40 = 499,915.20 : x
  2. Step 2: Convert to fraction form
    524,409.60/786,614.40 = 499,915.20/x
  3. Step 3: Cross multiply
    524,409.60x = 786,614.40 × 499,915.20
  4. Step 4: Simplify right side
    524,409.60x = 393,240,495,098.88
  5. Step 5: Solve for x
    x = 393,240,495,098.88/524,409.60
  6. Step 6: Final answer
    x = 749,872.80

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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.