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Finding the Fourth Proportional to 66,700.71, 92,070.14 and 38,417.67

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Solution

The fourth proportional to 66,700.71, 92,070.14 and 38,417.67 is: 53,029.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,700.71 : 92,070.14 = 38,417.67 : x
  2. Step 2: Convert to fraction form
    66,700.71/92,070.14 = 38,417.67/x
  3. Step 3: Cross multiply
    66,700.71x = 92,070.14 × 38,417.67
  4. Step 4: Simplify right side
    66,700.71x = 3,537,120,063.29
  5. Step 5: Solve for x
    x = 3,537,120,063.29/66,700.71
  6. Step 6: Final answer
    x = 53,029.72

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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.