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Finding the Fourth Proportional to 514,871,602.80, 772,307,404.20 and 514,871,602.80

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Solution

The fourth proportional to 514,871,602.80, 772,307,404.20 and 514,871,602.80 is: 772,307,404.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    514,871,602.80 : 772,307,404.20 = 514,871,602.80 : x
  2. Step 2: Convert to fraction form
    514,871,602.80/772,307,404.20 = 514,871,602.80/x
  3. Step 3: Cross multiply
    514,871,602.80x = 772,307,404.20 × 514,871,602.80
  4. Step 4: Simplify right side
    514,871,602.80x = 397,639,151,054,761,472
  5. Step 5: Solve for x
    x = 397,639,151,054,761,472/514,871,602.80
  6. Step 6: Final answer
    x = 772,307,404.20

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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.