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Finding the Fourth Proportional to 60,948.70, 91,386.60 and 31,424.20

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Solution

The fourth proportional to 60,948.70, 91,386.60 and 31,424.20 is: 47,117.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,948.70 : 91,386.60 = 31,424.20 : x
  2. Step 2: Convert to fraction form
    60,948.70/91,386.60 = 31,424.20/x
  3. Step 3: Cross multiply
    60,948.70x = 91,386.60 × 31,424.20
  4. Step 4: Simplify right side
    60,948.70x = 2,871,750,795.72
  5. Step 5: Solve for x
    x = 2,871,750,795.72/60,948.70
  6. Step 6: Final answer
    x = 47,117.51

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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.