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Finding the Fourth Proportional to 221,616,063.60, 310,772,672.40 and 221,616,063.60

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Solution

The fourth proportional to 221,616,063.60, 310,772,672.40 and 221,616,063.60 is: 310,772,672.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,616,063.60 : 310,772,672.40 = 221,616,063.60 : x
  2. Step 2: Convert to fraction form
    221,616,063.60/310,772,672.40 = 221,616,063.60/x
  3. Step 3: Cross multiply
    221,616,063.60x = 310,772,672.40 × 221,616,063.60
  4. Step 4: Simplify right side
    221,616,063.60x = 68,872,216,331,740,360
  5. Step 5: Solve for x
    x = 68,872,216,331,740,360/221,616,063.60
  6. Step 6: Final answer
    x = 310,772,672.40

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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.