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Finding the Fourth Proportional to 70,965,867.60, 106,448,801.40 and 38,717,240.40

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Solution

The fourth proportional to 70,965,867.60, 106,448,801.40 and 38,717,240.40 is: 58,075,860.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,965,867.60 : 106,448,801.40 = 38,717,240.40 : x
  2. Step 2: Convert to fraction form
    70,965,867.60/106,448,801.40 = 38,717,240.40/x
  3. Step 3: Cross multiply
    70,965,867.60x = 106,448,801.40 × 38,717,240.40
  4. Step 4: Simplify right side
    70,965,867.60x = 4,121,403,834,095,656.50
  5. Step 5: Solve for x
    x = 4,121,403,834,095,656.50/70,965,867.60
  6. Step 6: Final answer
    x = 58,075,860.60

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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.