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Finding the Fourth Proportional to 610,889.31, 840,037.80 and 530,176.71

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Solution

The fourth proportional to 610,889.31, 840,037.80 and 530,176.71 is: 729,049.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,889.31 : 840,037.80 = 530,176.71 : x
  2. Step 2: Convert to fraction form
    610,889.31/840,037.80 = 530,176.71/x
  3. Step 3: Cross multiply
    610,889.31x = 840,037.80 × 530,176.71
  4. Step 4: Simplify right side
    610,889.31x = 445,368,477,492.73
  5. Step 5: Solve for x
    x = 445,368,477,492.73/610,889.31
  6. Step 6: Final answer
    x = 729,049.39

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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.