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Finding the Fourth Proportional to 349,978,688.51, 524,896,772.58 and 128,573,931.78

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Solution

The fourth proportional to 349,978,688.51, 524,896,772.58 and 128,573,931.78 is: 192,834,718.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,978,688.51 : 524,896,772.58 = 128,573,931.78 : x
  2. Step 2: Convert to fraction form
    349,978,688.51/524,896,772.58 = 128,573,931.78/x
  3. Step 3: Cross multiply
    349,978,688.51x = 524,896,772.58 × 128,573,931.78
  4. Step 4: Simplify right side
    349,978,688.51x = 67,488,041,829,243,096
  5. Step 5: Solve for x
    x = 67,488,041,829,243,096/349,978,688.51
  6. Step 6: Final answer
    x = 192,834,718.36

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Why These Related Problems?

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