Home / 70,123,980.60-105,185,969.28-19,005,998.40

Finding the Fourth Proportional to 70,123,980.60, 105,185,969.28 and 19,005,998.40

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Solution

The fourth proportional to 70,123,980.60, 105,185,969.28 and 19,005,998.40 is: 28,508,997.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,123,980.60 : 105,185,969.28 = 19,005,998.40 : x
  2. Step 2: Convert to fraction form
    70,123,980.60/105,185,969.28 = 19,005,998.40/x
  3. Step 3: Cross multiply
    70,123,980.60x = 105,185,969.28 × 19,005,998.40
  4. Step 4: Simplify right side
    70,123,980.60x = 1,999,164,363,838,129
  5. Step 5: Solve for x
    x = 1,999,164,363,838,129/70,123,980.60
  6. Step 6: Final answer
    x = 28,508,997.16

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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.