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Finding the Fourth Proportional to 910,437.90, 1,272,251.10 and 910,437.90

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Solution

The fourth proportional to 910,437.90, 1,272,251.10 and 910,437.90 is: 1,272,251.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,437.90 : 1,272,251.10 = 910,437.90 : x
  2. Step 2: Convert to fraction form
    910,437.90/1,272,251.10 = 910,437.90/x
  3. Step 3: Cross multiply
    910,437.90x = 1,272,251.10 × 910,437.90
  4. Step 4: Simplify right side
    910,437.90x = 1,158,305,619,756.69
  5. Step 5: Solve for x
    x = 1,158,305,619,756.69/910,437.90
  6. Step 6: Final answer
    x = 1,272,251.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.