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Finding the Fourth Proportional to 645,872,166.90, 968,808,250.35 and 645,872,166.90

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Solution

The fourth proportional to 645,872,166.90, 968,808,250.35 and 645,872,166.90 is: 968,808,250.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,872,166.90 : 968,808,250.35 = 645,872,166.90 : x
  2. Step 2: Convert to fraction form
    645,872,166.90/968,808,250.35 = 645,872,166.90/x
  3. Step 3: Cross multiply
    645,872,166.90x = 968,808,250.35 × 645,872,166.90
  4. Step 4: Simplify right side
    645,872,166.90x = 625,726,283,964,152,192
  5. Step 5: Solve for x
    x = 625,726,283,964,152,192/645,872,166.90
  6. Step 6: Final answer
    x = 968,808,250.35

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Double scale
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Similar ratio
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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.