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Finding the Fourth Proportional to 653,496,985.20, 980,245,477.80 and 607,580,482.80

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Solution

The fourth proportional to 653,496,985.20, 980,245,477.80 and 607,580,482.80 is: 911,370,724.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,496,985.20 : 980,245,477.80 = 607,580,482.80 : x
  2. Step 2: Convert to fraction form
    653,496,985.20/980,245,477.80 = 607,580,482.80/x
  3. Step 3: Cross multiply
    653,496,985.20x = 980,245,477.80 × 607,580,482.80
  4. Step 4: Simplify right side
    653,496,985.20x = 595,578,020,664,240,640
  5. Step 5: Solve for x
    x = 595,578,020,664,240,640/653,496,985.20
  6. Step 6: Final answer
    x = 911,370,724.20

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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.