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Finding the Fourth Proportional to 72,465,695.60, 108,698,543.40 and 49,507,444.40

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Solution

The fourth proportional to 72,465,695.60, 108,698,543.40 and 49,507,444.40 is: 74,261,166.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,465,695.60 : 108,698,543.40 = 49,507,444.40 : x
  2. Step 2: Convert to fraction form
    72,465,695.60/108,698,543.40 = 49,507,444.40/x
  3. Step 3: Cross multiply
    72,465,695.60x = 108,698,543.40 × 49,507,444.40
  4. Step 4: Simplify right side
    72,465,695.60x = 5,381,387,093,736,487
  5. Step 5: Solve for x
    x = 5,381,387,093,736,487/72,465,695.60
  6. Step 6: Final answer
    x = 74,261,166.60

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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.