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Finding the Fourth Proportional to 100,118,971.80, 150,178,457.70 and 93,103,950.60

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Solution

The fourth proportional to 100,118,971.80, 150,178,457.70 and 93,103,950.60 is: 139,655,925.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,118,971.80 : 150,178,457.70 = 93,103,950.60 : x
  2. Step 2: Convert to fraction form
    100,118,971.80/150,178,457.70 = 93,103,950.60/x
  3. Step 3: Cross multiply
    100,118,971.80x = 150,178,457.70 × 93,103,950.60
  4. Step 4: Simplify right side
    100,118,971.80x = 13,982,207,706,884,988
  5. Step 5: Solve for x
    x = 13,982,207,706,884,988/100,118,971.80
  6. Step 6: Final answer
    x = 139,655,925.90

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1.5x scale

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.