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Finding the Fourth Proportional to 70,532,751.60, 105,799,127.40 and 19,422,658.80

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Solution

The fourth proportional to 70,532,751.60, 105,799,127.40 and 19,422,658.80 is: 29,133,988.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,532,751.60 : 105,799,127.40 = 19,422,658.80 : x
  2. Step 2: Convert to fraction form
    70,532,751.60/105,799,127.40 = 19,422,658.80/x
  3. Step 3: Cross multiply
    70,532,751.60x = 105,799,127.40 × 19,422,658.80
  4. Step 4: Simplify right side
    70,532,751.60x = 2,054,900,352,827,931.25
  5. Step 5: Solve for x
    x = 2,054,900,352,827,931.25/70,532,751.60
  6. Step 6: Final answer
    x = 29,133,988.20

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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.