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Finding the Fourth Proportional to 473,271.39, 653,140.98 and 258,431.40

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Solution

The fourth proportional to 473,271.39, 653,140.98 and 258,431.40 is: 356,649.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    473,271.39 : 653,140.98 = 258,431.40 : x
  2. Step 2: Convert to fraction form
    473,271.39/653,140.98 = 258,431.40/x
  3. Step 3: Cross multiply
    473,271.39x = 653,140.98 × 258,431.40
  4. Step 4: Simplify right side
    473,271.39x = 168,792,137,858.77
  5. Step 5: Solve for x
    x = 168,792,137,858.77/473,271.39
  6. Step 6: Final answer
    x = 356,649.78

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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.