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Finding the Fourth Proportional to 70,561,913.18, 105,688,555.02 and 50,029,394.90

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Solution

The fourth proportional to 70,561,913.18, 105,688,555.02 and 50,029,394.90 is: 74,934,681.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,561,913.18 : 105,688,555.02 = 50,029,394.90 : x
  2. Step 2: Convert to fraction form
    70,561,913.18/105,688,555.02 = 50,029,394.90/x
  3. Step 3: Cross multiply
    70,561,913.18x = 105,688,555.02 × 50,029,394.90
  4. Step 4: Simplify right side
    70,561,913.18x = 5,287,534,455,505,957
  5. Step 5: Solve for x
    x = 5,287,534,455,505,957/70,561,913.18
  6. Step 6: Final answer
    x = 74,934,681.01

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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.