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Finding the Fourth Proportional to 70,005,636.40, 97,781,142.80 and 70,005,636.40

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Solution

The fourth proportional to 70,005,636.40, 97,781,142.80 and 70,005,636.40 is: 97,781,142.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,005,636.40 : 97,781,142.80 = 70,005,636.40 : x
  2. Step 2: Convert to fraction form
    70,005,636.40/97,781,142.80 = 70,005,636.40/x
  3. Step 3: Cross multiply
    70,005,636.40x = 97,781,142.80 × 70,005,636.40
  4. Step 4: Simplify right side
    70,005,636.40x = 6,845,231,129,633,278
  5. Step 5: Solve for x
    x = 6,845,231,129,633,278/70,005,636.40
  6. Step 6: Final answer
    x = 97,781,142.80

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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.