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Finding the Fourth Proportional to 623,860,806.40, 937,806,748.80 and 575,487,865.60

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Solution

The fourth proportional to 623,860,806.40, 937,806,748.80 and 575,487,865.60 is: 865,091,056.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,860,806.40 : 937,806,748.80 = 575,487,865.60 : x
  2. Step 2: Convert to fraction form
    623,860,806.40/937,806,748.80 = 575,487,865.60/x
  3. Step 3: Cross multiply
    623,860,806.40x = 937,806,748.80 × 575,487,865.60
  4. Step 4: Simplify right side
    623,860,806.40x = 539,696,404,212,187,328
  5. Step 5: Solve for x
    x = 539,696,404,212,187,328/623,860,806.40
  6. Step 6: Final answer
    x = 865,091,056.65

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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.