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Finding the Fourth Proportional to 65,203,712.80, 97,805,569.20 and 19,759,602.40

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Solution

The fourth proportional to 65,203,712.80, 97,805,569.20 and 19,759,602.40 is: 29,639,403.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,203,712.80 : 97,805,569.20 = 19,759,602.40 : x
  2. Step 2: Convert to fraction form
    65,203,712.80/97,805,569.20 = 19,759,602.40/x
  3. Step 3: Cross multiply
    65,203,712.80x = 97,805,569.20 × 19,759,602.40
  4. Step 4: Simplify right side
    65,203,712.80x = 1,932,599,159,897,686
  5. Step 5: Solve for x
    x = 1,932,599,159,897,686/65,203,712.80
  6. Step 6: Final answer
    x = 29,639,403.60

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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.