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Finding the Fourth Proportional to 910,415.40, 1,362,998.70 and 910,415.40

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Solution

The fourth proportional to 910,415.40, 1,362,998.70 and 910,415.40 is: 1,362,998.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,415.40 : 1,362,998.70 = 910,415.40 : x
  2. Step 2: Convert to fraction form
    910,415.40/1,362,998.70 = 910,415.40/x
  3. Step 3: Cross multiply
    910,415.40x = 1,362,998.70 × 910,415.40
  4. Step 4: Simplify right side
    910,415.40x = 1,240,895,006,659.98
  5. Step 5: Solve for x
    x = 1,240,895,006,659.98/910,415.40
  6. Step 6: Final answer
    x = 1,362,998.70

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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.