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Finding the Fourth Proportional to 139,968,117.60, 209,952,176.40 and 126,575,804.40

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Solution

The fourth proportional to 139,968,117.60, 209,952,176.40 and 126,575,804.40 is: 189,863,706.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,117.60 : 209,952,176.40 = 126,575,804.40 : x
  2. Step 2: Convert to fraction form
    139,968,117.60/209,952,176.40 = 126,575,804.40/x
  3. Step 3: Cross multiply
    139,968,117.60x = 209,952,176.40 × 126,575,804.40
  4. Step 4: Simplify right side
    139,968,117.60x = 26,574,865,613,360,700
  5. Step 5: Solve for x
    x = 26,574,865,613,360,700/139,968,117.60
  6. Step 6: Final answer
    x = 189,863,706.60

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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.