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Finding the Fourth Proportional to 190,325.59, 262,638.98 and 105,437.59

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Solution

The fourth proportional to 190,325.59, 262,638.98 and 105,437.59 is: 145,498.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,325.59 : 262,638.98 = 105,437.59 : x
  2. Step 2: Convert to fraction form
    190,325.59/262,638.98 = 105,437.59/x
  3. Step 3: Cross multiply
    190,325.59x = 262,638.98 × 105,437.59
  4. Step 4: Simplify right side
    190,325.59x = 27,692,020,564.07
  5. Step 5: Solve for x
    x = 27,692,020,564.07/190,325.59
  6. Step 6: Final answer
    x = 145,498.15

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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.