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Finding the Fourth Proportional to 897,998.76, 1,236,409.38 and 761,750.28

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Solution

The fourth proportional to 897,998.76, 1,236,409.38 and 761,750.28 is: 1,048,815.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    897,998.76 : 1,236,409.38 = 761,750.28 : x
  2. Step 2: Convert to fraction form
    897,998.76/1,236,409.38 = 761,750.28/x
  3. Step 3: Cross multiply
    897,998.76x = 1,236,409.38 × 761,750.28
  4. Step 4: Simplify right side
    897,998.76x = 941,835,191,409.63
  5. Step 5: Solve for x
    x = 941,835,191,409.63/897,998.76
  6. Step 6: Final answer
    x = 1,048,815.69

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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.