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Finding the Fourth Proportional to 623,860,978.40, 937,807,006.80 and 575,488,037.60

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Solution

The fourth proportional to 623,860,978.40, 937,807,006.80 and 575,488,037.60 is: 865,091,314.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,860,978.40 : 937,807,006.80 = 575,488,037.60 : x
  2. Step 2: Convert to fraction form
    623,860,978.40/937,807,006.80 = 575,488,037.60/x
  3. Step 3: Cross multiply
    623,860,978.40x = 937,807,006.80 × 575,488,037.60
  4. Step 4: Simplify right side
    623,860,978.40x = 539,696,713,990,861,824
  5. Step 5: Solve for x
    x = 539,696,713,990,861,824/623,860,978.40
  6. Step 6: Final answer
    x = 865,091,314.69

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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.