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Finding the Fourth Proportional to 70,574.96, 97,386.20 and 42,279.92

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Solution

The fourth proportional to 70,574.96, 97,386.20 and 42,279.92 is: 58,341.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,574.96 : 97,386.20 = 42,279.92 : x
  2. Step 2: Convert to fraction form
    70,574.96/97,386.20 = 42,279.92/x
  3. Step 3: Cross multiply
    70,574.96x = 97,386.20 × 42,279.92
  4. Step 4: Simplify right side
    70,574.96x = 4,117,480,745.10
  5. Step 5: Solve for x
    x = 4,117,480,745.10/70,574.96
  6. Step 6: Final answer
    x = 58,341.95

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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.