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Finding the Fourth Proportional to 611,453.70, 913,063.16 and 499,356.45

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Solution

The fourth proportional to 611,453.70, 913,063.16 and 499,356.45 is: 745,672.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,453.70 : 913,063.16 = 499,356.45 : x
  2. Step 2: Convert to fraction form
    611,453.70/913,063.16 = 499,356.45/x
  3. Step 3: Cross multiply
    611,453.70x = 913,063.16 × 499,356.45
  4. Step 4: Simplify right side
    611,453.70x = 455,943,979,451.77
  5. Step 5: Solve for x
    x = 455,943,979,451.77/611,453.70
  6. Step 6: Final answer
    x = 745,672.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.