Home / 30,805,459.20-42,509,916.96-16,864,141.60

Finding the Fourth Proportional to 30,805,459.20, 42,509,916.96 and 16,864,141.60

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Solution

The fourth proportional to 30,805,459.20, 42,509,916.96 and 16,864,141.60 is: 23,271,630.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,805,459.20 : 42,509,916.96 = 16,864,141.60 : x
  2. Step 2: Convert to fraction form
    30,805,459.20/42,509,916.96 = 16,864,141.60/x
  3. Step 3: Cross multiply
    30,805,459.20x = 42,509,916.96 × 16,864,141.60
  4. Step 4: Simplify right side
    30,805,459.20x = 716,893,259,017,681.62
  5. Step 5: Solve for x
    x = 716,893,259,017,681.62/30,805,459.20
  6. Step 6: Final answer
    x = 23,271,630.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.