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Finding the Fourth Proportional to 68,698,904.40, 103,048,356.60 and 34,686,680.40

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Solution

The fourth proportional to 68,698,904.40, 103,048,356.60 and 34,686,680.40 is: 52,030,020.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,698,904.40 : 103,048,356.60 = 34,686,680.40 : x
  2. Step 2: Convert to fraction form
    68,698,904.40/103,048,356.60 = 34,686,680.40/x
  3. Step 3: Cross multiply
    68,698,904.40x = 103,048,356.60 × 34,686,680.40
  4. Step 4: Simplify right side
    68,698,904.40x = 3,574,405,411,129,430.50
  5. Step 5: Solve for x
    x = 3,574,405,411,129,430.50/68,698,904.40
  6. Step 6: Final answer
    x = 52,030,020.60

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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.