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Finding the Fourth Proportional to 28,320,205,061.60, 42,398,678,254.80 and 28,320,205,061.60

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Solution

The fourth proportional to 28,320,205,061.60, 42,398,678,254.80 and 28,320,205,061.60 is: 42,398,678,254.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,320,205,061.60 : 42,398,678,254.80 = 28,320,205,061.60 : x
  2. Step 2: Convert to fraction form
    28,320,205,061.60/42,398,678,254.80 = 28,320,205,061.60/x
  3. Step 3: Cross multiply
    28,320,205,061.60x = 42,398,678,254.80 × 28,320,205,061.60
  4. Step 4: Simplify right side
    28,320,205,061.60x = 1,200,739,262,516,736,819,200
  5. Step 5: Solve for x
    x = 1,200,739,262,516,736,819,200/28,320,205,061.60
  6. Step 6: Final answer
    x = 42,398,678,254.80

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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.