Home / 128,745,712.80-193,152,783.60-55,931,248.80

Finding the Fourth Proportional to 128,745,712.80, 193,152,783.60 and 55,931,248.80

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Solution

The fourth proportional to 128,745,712.80, 193,152,783.60 and 55,931,248.80 is: 83,911,737.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,745,712.80 : 193,152,783.60 = 55,931,248.80 : x
  2. Step 2: Convert to fraction form
    128,745,712.80/193,152,783.60 = 55,931,248.80/x
  3. Step 3: Cross multiply
    128,745,712.80x = 193,152,783.60 × 55,931,248.80
  4. Step 4: Simplify right side
    128,745,712.80x = 10,803,276,395,944,158
  5. Step 5: Solve for x
    x = 10,803,276,395,944,158/128,745,712.80
  6. Step 6: Final answer
    x = 83,911,737.03

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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.