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Finding the Fourth Proportional to 66,417.70, 99,626.55 and 59,856.70

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Solution

The fourth proportional to 66,417.70, 99,626.55 and 59,856.70 is: 89,785.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,417.70 : 99,626.55 = 59,856.70 : x
  2. Step 2: Convert to fraction form
    66,417.70/99,626.55 = 59,856.70/x
  3. Step 3: Cross multiply
    66,417.70x = 99,626.55 × 59,856.70
  4. Step 4: Simplify right side
    66,417.70x = 5,963,316,515.39
  5. Step 5: Solve for x
    x = 5,963,316,515.39/66,417.70
  6. Step 6: Final answer
    x = 89,785.05

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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.