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Finding the Fourth Proportional to 66,865,200.30, 100,138,368.15 and 66,865,200.30

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Solution

The fourth proportional to 66,865,200.30, 100,138,368.15 and 66,865,200.30 is: 100,138,368.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,865,200.30 : 100,138,368.15 = 66,865,200.30 : x
  2. Step 2: Convert to fraction form
    66,865,200.30/100,138,368.15 = 66,865,200.30/x
  3. Step 3: Cross multiply
    66,865,200.30x = 100,138,368.15 × 66,865,200.30
  4. Step 4: Simplify right side
    66,865,200.30x = 6,695,772,044,064,891
  5. Step 5: Solve for x
    x = 6,695,772,044,064,891/66,865,200.30
  6. Step 6: Final answer
    x = 100,138,368.15

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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.