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Finding the Fourth Proportional to 1,593,639, 2,199,221.88 and 878,247

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Solution

The fourth proportional to 1,593,639, 2,199,221.88 and 878,247 is: 1,211,980.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,593,639 : 2,199,221.88 = 878,247 : x
  2. Step 2: Convert to fraction form
    1,593,639/2,199,221.88 = 878,247/x
  3. Step 3: Cross multiply
    1,593,639x = 2,199,221.88 × 878,247
  4. Step 4: Simplify right side
    1,593,639x = 1,931,460,018,444.36
  5. Step 5: Solve for x
    x = 1,931,460,018,444.36/1,593,639
  6. Step 6: Final answer
    x = 1,211,980.89

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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.