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Finding the Fourth Proportional to 66,428.20, 93,068.60 and 66,428.20

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Solution

The fourth proportional to 66,428.20, 93,068.60 and 66,428.20 is: 93,068.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,428.20 : 93,068.60 = 66,428.20 : x
  2. Step 2: Convert to fraction form
    66,428.20/93,068.60 = 66,428.20/x
  3. Step 3: Cross multiply
    66,428.20x = 93,068.60 × 66,428.20
  4. Step 4: Simplify right side
    66,428.20x = 6,182,379,574.52
  5. Step 5: Solve for x
    x = 6,182,379,574.52/66,428.20
  6. Step 6: Final answer
    x = 93,068.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.